eia report jincheng - world...

Sihe Coal-bed Gas Power Plant

1

Environmental Impact Assessment Report

for

Jincheng Coal-bed Methane Project

Jincheng Anthracite Mining Group

April 2004

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Administrator

E962 V. 1

Administrator

E952 V. 1


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Table of Contents Executive Summary..............................................................................................................................................i 1. Introduction...................................................................................................................................................1 2. Environmental protection policy, law and administrative system.............................................3

2.1 The environmental protection administration and organization in China ....................3 2.2 Laws and polices on environmental protection of China ......................................................3 2.3 International conventions that the PRC is party to ................................................................4 2.4 Policies on environmental protection of the World Bank .....................................................4 2.5 Environmental standards in China, the World Bank and World Health Organization (WHO) ................................................................................................................................4

3. General description of the Project.........................................................................................................11 3.1 Project name, size and primary composition..........................................................................11 3.2 Principle of coal -bed gas generation........................................................................................... 11 3.3 Geographical position and justification ....................................................................................12 3.4 Layout in the plant site ....................................................................................................................15 3.5 Fuel and air pollution mitigation.................................................................................................15 3.6 Noise pollution and mitigation......................................................................................................17 3.7 Water supply and water treatment .............................................................................................17 3.8 Total pollutant emissions ................................................................................................................19 3.9 Transportation engineering outside the plant .........................................................................19 3.10 Construction schedule ...................................................................................................................20

4. Environmental baseline................................................................................................................................28 4.1 Basis of assessment............................................................................................................................28 4.2 Topography, geology and geomorphology................................................................................29 4.3 Water resource ....................................................................................................................................30 4.4 Atmospheric Resources ...................................................................................................................31 4.5 Acoustical environment ...................................................................................................................34 4.6 Ecological environment ...................................................................................................................34 4.7 Health and safety...............................................................................................................................34 4.8 Social and economic environment ...............................................................................................37 4.9 Human culture and natural landscape......................................................................................37 4.10 Land utilization................................................................................................................................37

5. Environmental Impact Assessment ..........................................................................................................48 5.1 Environmental impact identification and pollution factor screening .............................48 5.2 Operation Period...............................................................................................................................48 5.3 Impact outside plant area...............................................................................................................58 5.4 Ecology ..................................................................................................................................................60 5.5 Social economy and living standards .........................................................................................61 5.6 Construction Period .........................................................................................................................64

6. Analysis of project alternatives .................................................................................................................74 6.1 No action...............................................................................................................................................74 6.2 Plant site alternatives .......................................................................................................................75 6.3 Units replacement..............................................................................................................................76 6.4 Fuel options .........................................................................................................................................77 6.5 NOX emission ......................................................................................................................................78 6.6 Waste water discharge.....................................................................................................................79

7. Environmental management program ...................................................................................................80 7.1 Environmental mitigation ..............................................................................................................80 7.2 Environmental monitoring .............................................................................................................86 7.3 Responsibilities for mitigation and monitoring ......................................................................88 7.4 Training plan.......................................................................................................................................89

8 Public participation and publicizing ........................................................................................................94 8.1 Public participation ..........................................................................................................................94 8. 2 Publicizing...........................................................................................................................................94


i

Executive Summary

The following summarizes the environmental assessment for Sihe Coal-bed Gas

Power Plant and associated transmission system development.

General description

1. The site of Sihe Coal-bed Gas Power Plant (Sihe Plant) lies in the west of Shanxi

Province, China. The area possesses abundant coal resources but lacks in power

supply relatively. Most power consumption relies on delivery of the middle and

northern grids of Shanxi power grid. There is no planning of building a large

power plant to supply power for local area. It is predicted that electric power

shortage of Jincheng Municipality will exceed 1000MW by the year 2010. As a

major industry in Jincheng Municipality, Jincheng Anthracite Mining Group

needs construct comprehensive industries in order to satisfy itself development

and power construction is included in the development program. When Jincheng

Anthracite Mining Group builds Sihe Coal-bed Gas Power Plant, it is able to

supply Jincheng power grid redundant power to alleviate tight supply of

Jincheng power grid. Using gas engines for power generation, Sihe Plant can

strengthen peak regulating capacity of the power grid, improve power supply

structure and enhance operational safety and reliability of Jincheng power grid.

2. Sihe mining area bears abundant coal-bed gas and coal-bed gas content volume

is up to 15.04~19.23 m3 per ton of coal. Coal-bed gas there can be exploited for

36 years. Sihe Plant using coal-bed gas for power generation belongs to a pit-

mouth power plant. Compared with building a power plant in other pla ce, this

project will relieve pressure on fuel transportation. Utilizing coal-bed gas to

generate power has some advantages such as reducing threat to safe mining

production and greenhouse gas emission (CH4). In addition, there is an existing

coal-bed gas extraction station in Sihe mining area. Investment to building a gas

extraction station can be conserved if a coal-bed gas power plant is constructed

here.


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3. Construction of Sihe Plant complies with environmental and industrial policies.

It has been approved by State Development and Plan Committee with the

document [2001]2749. Land requisition and water resource acquisition of the

Plant have both been approved by the departments with relevant documents.

4. Static investment of this project (i.e. capital investment) amounts to

approximately 645.65 millions Yuan (RMB), of which self-possessed fund

accounts for 25% i.e. 162.16 millions Yuan and principal of a loan accounts for

75% i.e. 486.48 millions Yuan. The Plant will apply for a loan of 97.3 million

Yuan with annual loan interest rate of 5.76% from China Bank and apply for a

loan of 47.06 millions dollars from Asian Development Bank (ADB), converted

into 389.18 million Yuan if one dollar can be changed to 8.27 Yuan, with annual

loan interest rate of 2.8% from the 2nd year. The grace period of ADB is 5 years,

refundment deadline is 20 years, and the loan returning period is 25 years totally.

Interest of construction period reaches 43.05 million Yuan. Dynamic investment

amounts to 691.69 million Yuan.

5. The EIA report for Sihe Plant using gas turbine combined cycle device for power

generation was completed in September 2002 by Meteorological Science

Research Institute of China and approved on Jan. 30 2003 by State

Environmental Protection Administration (SEPA) with the document Huan Shen

[2003] No. 41. The EIA report after gas turbine combined cycle device was

alternated is going to be approved further. The auxiliary 110kV power

transmission project is in the charge of Jincheng Municipal Environmental

Protection Bureau and its environmental impact registration form has been

approved by this bureau. In the light of Operational Policy on environmental

assessment (OP4.01) of the World Bank, the project of Sihe Plant (the Project) is

classified as Catalogue B which needs to submit an EA report to the World

Bank.

6. Following a review by the World Bank, it was also determined to supplement the

environmental assessment studies with the assistance of a consultancy contract to

aid with the production of an EA report including the associated transmission

system to fully comply with the World Bank requirements.


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Project description

7. Sihe Plant is located at the southern foot of Taihang Mountain in the southeast

part of Shanxi Province. Topography around the Plant is composed of low

mountains, hills and river valleys. The Plant site is closed to Hou (ma)-Yue

(Shan) railway on the east. On the east of the railway is Qinhe River

approximately 310m away the Plant. On the south of the Plant is the coal-bed gas

extraction station which will supply the Plant coal-bed gas. On the west of the

Plant is a 7m-wide road for transporting coal gangue. There is no village beside

the Plant and the nearest village around is Qincui Village 400m away on the

west. The relative drop in level within 1km area centering the Plant is 50m and

ground elevation within 3km area centering the Plant is between 530-770m.

8. Construction scale of Sihe Plant is at 100MW level. Most coal-bed gas is

supplied by the Gas Extraction S tation on the south of the Plant with a 100m-

long gas transporting pipeline. In the fact, the Plant and the Gas Extraction

Station composes a small industrial zone.

9. Essential ingredient of coal-bed gas is CH4 analogous to natural gas, which is a

kind of clean energy. Pollutant emitted from the power plant with coal-bed gas is

principally NOX with no smoke dust or solid waste , SO2 can be ignored.

10. Sihe Plant will employ gas engines to generate electric power. In the feasibility

study report, it is proposed to adopt Model G3516 units supplied by US

Caterpillar Company. The capacity of a single unit is 975kw and installed

capacity of 96 sets of units in the Plant adds up to 93.6MW. Every 6 gas engines

are linked to a 4.4t/h exhaust heat boiler and every 4 such boilers are linked to a

3MW steam turbine. The installed capacity of the whole Plant reaches

105.6MW. Each chimney of 16 exhaust heat boilers is 40m high and it’s inside

diameter is 3m. NOX emission in total from chimneys is 212kg per hour and

concentration is 180mg/Nm3 (15% O2 content, dry flue gas), which is in

accordance with the World Bank requirement of 2000 mg/Nm3 (15% O2 content


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and dry flue gas)----ambient levels of ozone less than 120µg/m3 (8-hour) and

nitrogen dioxide less than 150µg/m3 (24-hour), receiving funding applications

after July 1, 2000; in other cases, the maximum emission level is 300mg/Nm3).

There is no this kind of standards in China now.

11. Sihe Plant adopts secondary circulation cooling system. Every steam turbine is

fitted with a 1000m3/h mechanical drought cooling tower, totally 4 sets. Total

make-up water of 100m 3/h is needed for cooling towers and other industrial

utilization. The make-up water comes from shallow ground water at the river

shoal of Qinhe River. After reasonability of water catchment is demonstrated, it

is concluded that reserve volume of shallow ground water is 37.50 million m3

and it has strong regulating capacity. Shanxi Provincial Water Resource

Management Committee approved the application for water intake of Sihe Plant

by the Document Jinshuizifa [2003] No. 57. Sihe Plant will make wells on the

benchland within approximately 300~500m -wide area along Yinzhuang-

Liuzhuang-Lizhuang reach of Qinhe River. Find the benchland position in Figure

3.3-2. There is a 1000m3 reservoir to be built in the Plant for storage of pumped

ground water.

12. Main sewage of Sihe Plant is domestic sewage, oil contaminated wastewater and

acidic and alkaline wastewater, totally 12t/h. The water goes into the Sewage

Treatment Station of Sihe industrial square (STS) after being treated respectively

by septic tank, oil & water separator and neutralization pond. Rain water is

discharged through separate system. The drainage from cooling water system is

used for floor washing and green land irrigating. The excess is discharged to

STS.

Climate characteristic

13. The region where Sihe Plant is located belongs to semi humid area of warm and

humid zone of East Asia monsoon region. The climate is continental climate

with clear-cut four seasons. Average annual wind velocity is 2.2m/s. Leading

wind direction in a year is NS direction, 10% and S direction 12%. Leading wind


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direction in summers is S direction, 15%; and that in winters is NW direction,

17%.

Baseline atmospheric quality

14. In the Jincheng municipal planned industrial zone where Sihe Plant is located,

there are only two small pollution sources around. One is the 4x2MW Coal-bed

Gas P ilot Power P lant 100m away the Project with only 14.1t/y emission of

NOX. The other is Jiafeng (coal fired) Power Plant 3.5km away the Project with

790t/y emiss ion of smoke dust and 506t/y emission of SO2, no NOX emission

record.

15. The principal impact on ambient air produced by Sihe Plant will be NO2.

Therefore, monitoring analysis of status quo of atmospheric environment is

conducted mainly upon NO2. The monitor ing results of status quo of ambient air

quality around Sihe Plant (3kmx8km) are: average daily concentration of NO2

meets the requirement of class II in Ambient air quality standard (GB3095-1996)

with max value of 0.059mg/Nm3 occupying 49% of class II sta ndard, also in

compliance with requirements of the World Bank and World Health

Organization (WHO). NO2 concentration of an hour also meets the requirement

of class II in Ambient air quality standard (GB3095-1996).

Mitigation measures for atmospheric pollutants

16. Main air pollutant of Sihe Plant is NOX. According to the feasibility report said

in the 10th article mentioned above, configuration of boilers and stacks causes

flue gas emission through low stacks to be too small (outlet velocity of every

stack is 11.65m3/s) and almost no plume rise. As a result, impact on ground

concentration of NO2 nearby far exceeds the hourly concentration limit 0.24

mg/Nm3 in class II standard of national standard GB3096-1996. That can not

meet relevant requirements and so the Plant should consider relevant issues from

the view point of environmental protection.


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17. The consultant expert suggests that every section workshop be equipped with a

60m-long stack with inside diameter is 2m. Thus equipment configuration is in

line with the feasibility report; however, how flue gas outlets of 4 exhaust heat

boilers are connected to stacks should be considered. Flue gas from 4 exhaust

heat boilers will be emitted from one stack (totally 4 stacks in the Plant) and then

outlet velocity of every stack will be 46.6m 3/s (flue gas temperature 160? , dry ),

and NOX emission will be 53kg/h, totally 212kg/h. Ground concentration of NO2

would drop greatly and comply with relevant standards when this measure is

carried out.

Environment atmospheric impact perdition

18. NOX emission concentration of Sihe Plant is 180mg/Nm3 (15%O2 content, dry

flue gas), which is in accordance with the World Bank’s requirement. There is no

relevant standard in China.

19. On the promise of building 4 stacks of 60m height in the Plant for NOX

emission, average annual concentration of NO2 emission in the surroundings has

the max value of 0.0035mg/Nm3; the max average daily concentration is

0.087mg/Nm3; the max concentration of an hour is 0.123 mg/Nm3. They all

meet requirements of standards of China (separately 0.08, 0.12 and 0.24mg/Nm3

in Ambient air quality standard, GB3095-1996) and the World Bank.

Superposition of all concerned monitoring values also meet standards of China

and the World Bank.

Alternative schemes

20. Sihe Plant can also replace 975kW single unit now with larger scale single unit

such as 1800kW of gas engines and fit exhaust heat boilers of larger evaporation

capacity so as to increase flue gas volume at outlets of the stacks and efficient

rise height. Meanwhile, with dilution nitrogen burning technique and adjustment

of ratio between fuel and air, NOX emission concentration can be reduced to

90mg/Nm3 (15% O2 content and dry flue gas). Thus the Plant can mitigate

impact on ground NO2 concentration incurred by NOX emission of the Plant.


vii

Aquatic environment

21. Water for living in Sihe Plant is supplied by the domestic water supply system of

Sihe Industrial Square in compliance with GB5479-85 PRC Sanitary Standard

for Drinking Water.

22. Industrial water of Sihe Plant is taken from shallow ground water at river shoal

of Qinhe River in compliance with utilization requirements after being assayed

by Shanxi Provincial Water Resource Research Institute.

23. The sewage treatment station of Sihe Industrial Square was put into operation in

July of 2002. Outgoing water quality from the station is in compliance with

Grade I standard for urban secondary sewage treatment plants of Integrated

Wastewater Discharge Standard (GB8978-1996) (table 3.7-2). The outgoing

water can be reused. Sihe Plant is located in STS area and effluent volume of the

Project has been considered in accommodation volume plan of the station in

Jiafeng Town 1.5km away eastern boundary of Sihe Plant.

Mitigation measures and impact prediction for aquatic environment

24. The 1t/h acidic and alkaline waste water of Sihe Plant after being treated in the

neutralization pond and 0.8t/h sewage of exhausted heat boilers runs into the

Sewage Treatment Station (STS) of Sihe Industrial Square.

25. Oil contaminated waste water of Sihe Plant (5t/h) runs into STS after being

treated by oil and water separator.

26. Domestic sewage of Sihe Plant (5t/h) is discharged to STS after being treated by

septic tank.

27. Circulating water treatment depends on physical method mainly. And drainage

from cooling towers (7t/h) is used for floor washing and green land irrigating.

The excess (16t/h) is discharged to STS.


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28. Wastewater of Sihe Plant is discharged into STS w ith no impact on water

environment.

29. Rainwater within Sihe Plant site is discharged through separate system.

Acoustic e nvironment

30. Noise levels in the proposed plant are 47 dB(A) at daytime and 42.2 dB(A) at

nighttime, less than Catalogue III ( 65 dB(A) at daytime and 55 dB(A) at

nighttime) of Standard of Environment Noise of Urban Area (GB3096-93).

31. From environmental noise, major objectives to be protected are Qinzhuang

village and Yinzhuang Village, of which noise at daytime was 55~57dB(A) and

at nighttime was 45-49dB(A), not higher than Catalogue III of Standard of

Environment Noise of Urban Area.

Mitigation measures and impact prediction for noise environment

32. Sihe Plant needs to take the following measures ---- noise insulation, vibration

insulation of the base, noise absorption indoor and fitting exhaust muffler, so as

to mitigate noise source discharging. Noise of 5-15 dB(A) can be reduced

usually if these measures are carried out. Exhaust muffler can reduce noise by

30dB.

33. Sihe Plant when completed will cause a little noise impact on the nearest 2

villages----Qinzhuang and Yinzhuang Villages which is in compliance with

Catalogue III of Standard of Environment Noise of Urban Area (GB3096-93).

34. Noise levels at boundary of Sihe Plant when completed will rise; however,

around the Plant is the railway, highway, gas extraction station and Sihe gas pilot

plant. There will be no noise impact on residents. Boundary noise is less than 65

dB(A) in compliance with noise standard for industrial areas of the World Bank.


ix

Ecological environment

35. Sihe Plant is located in industrial zone occupying barren land. There is no rare

and endangered plant or animal. No impact would be produced on ecological

environment around. For the reason that 11,700m2 of green land will be

constructed in the Plant, it will improve ecological environment there.

Social economic and living quality standard

36. Sihe Plant construction can alleviate tight power shortage of the power grid,

improve power supply structure, and enhance safe and economic operation of the

power grid.

37. Sihe Plant , compared with construction of the same capacity coal-fired power

plant, can save 266.1 thousands tons of raw coal every year.

38. Annual reduced 151.14 millions m3 of CH4 by Sihe Plant is equivalent to 2.12

millions tons of CO2. Greenhouse gas emission is decreased and environment is

protected.

39. When Sihe Plant is built up, it will reduce emission of 2,661 tons of SO2, 532

tons of smoke dust and 52,550 tons of slag every year compared with

corresponding capacity coal-fired power plant. That is helpful to improving

environment.

40. Because of increasing of electric power, the dwelling around can use more

power. It will improve power shortage situation and raise living quality of

people.

Transmission line

41. Designed according of the national design specification, the associated 6km

110kV transmission line does neither go through ecological sensitive areas nor

cross over residential houses. And the occupied land of 576m2 for tower


x

foundation has been compensated accordingly. The transmission line has little

impact on the dwelling nearby.

Environmental and safe management and monitoring

42. There will be professional personnel in Sihe Plant responsible for environmental

protection work, supervision and management of environmental protection work

and receiving inspection and supervision of local environmental protection

department. Some monitoring work can also be undertaken by chemical

personnel of the Plant or local Environmental Monitoring Station.

43. Sihe Plant is located at the edge of Sihe mining area where coal columns are

reserved to protect the mining area. Its construction and operation have no

impact on coal mining.

44. When Sihe Plant is completed, SEPA will instruct the departments concerned to

fulfill acceptance of the completed project and comprehensive inspection

whether environmental facility is built up and whether mitigation measures are in

compliance with relevant regulations. If not eligible, the Plant would be given

punishment. Similarly, the Plant safe conditions, safe instruments and

management will be inspected by State Supervision and Management Bureau of

Safe Production.

45. Sihe Plant has prepared monitoring plan and should carry out environmental

monitoring strictly according to the monitoring plan. It should monitor normal

operation of environmental facility and standard conformation of pollutant

discharge.

46. For security guarantee facility and fire and blast prevention work of the Plant, a

management system of special personnel in charge of monitor and checkup will

be established.


1

1. Introduction 1.1 Jincheng Anthracite Mining Corporation of Shanxi Province (JAMC) is proposed

to build a 105.6MW coal-bed gas power plant (the Project). The power plant site

is located in Sihe min ing area of Jincheng Municipality, Shanxi Province. Its

auxiliary projects contain approx. 6km length of 110kV power transmission lines,

expansion of two 30000m3 gas tanks and a coal-bed gas pressurizing station. Coal-

bed gas which the power plant demands is to be supplied by Sihe mining of

JAMC on the power plant site.

1.2 There is a Gas Extraction Station in Sihe mining area. Gas demanded by the

power plant can be guaranteed as long as the existing extraction pumps are

replaced with two new pumps.

1.3 In the west of Jincheng mining area in Jincheng City, Shanxi Province, Sihe

mining is located in the southeast part of Shanxi Province and at the southern foot

of Taihang Mountain, covering a total area of 960km2. As a component of Qinshui

coal-bed gas collective belt of North of China, Sihe mining is one of the

discovered areas in China nowadays with the high reserves of coal-bed gas.

1.4 The Environmental Impact Assessment (EIA) Report of the Project has been

completed according to the laws and regulations on environmental protection of

China and has been approved by State Environmental Protection Administration

(SEPA) of China in Jan 2003. The EIA report after gas turbine combined cycle

device was alternated is going to be approved further. The auxiliary 110kV power

transmission project is in the charge of Jincheng Municipal Environmental

Protection Bureau and its environmental impact registration form has been

approved by this bureau. In line with the environmental policies of the World

Bank such as the Operational Policy on Environmental Assessment (OP4.01) and

related documents, the Project belongs to catalogue B for which a relevant EIA

report shall be delivered to the World Bank.


2

1.5 The independent consultancy work involves not only environmental laws and policies of China but also environmental policies and standards of the World Bank so as to prepare an English report (the Report) in conformance wit h the World Bank EA requirements and technical requirements.

1.6 Relevant basic values, risk analysis and public participation in existing Chinese

EIA reports are employed in preparation of the Report.

1.7 The independent consultancy work will also take environmental management, safety and human health into consideration in the Report.


3

2. Environmental protection policy, law and administrative system

2.1 The environmental protection administration and organization in China Environmental protection in China is mainly led and supervised by the State

Environmental Protection Administration (SEPA) and its subordinate provincial,

municipal and county Environmental Protection Bureaus. The environmental

monitoring is implemented by the corresponding Environmental Monitoring

Stations. The overall environmental administrative framework is shown in Fig.

2.1-1. The local monitoring stations provide reports seasonally or annually for the

monitoring station at regional, provincial and national levels. The Environmental

Protection Bureaus are also responsible for the supervision of the Environmental

Monitoring Stations at the same level.

2.2 Laws and polices on environmental protection of China 2.2.1 Laws and regulations on environmental protection of China

(1) PRC Environmental Protection Law, Dec. 26, 1989

(2) PRC Air Pollution Prevention and Mitigation Law, Sep. 1, 2000

(3) PRC Water Pollution P revention and Mitigation Law, May 15, 1996

(4) PRC Environmental Noise Prevention and Mitigation Law , Mar. 1, 1997

(5) PRC Environmental Impact Assessment Law, Sep. 1, 2003

(6) PRC Cleaner Production Promotion Law, Jan. 1, 2003

(7) Approval of State Council Regarding Relevant Problems of Acid Rain Control

Area and SO2 Pollution Control Area, Guohan [1998] No.5

(8) National Tenth Five-year Plan of Environmental Protection, Guohan [2001]No.

169

2.2.2 According to PRC Environmental Impact Assessment Law, it is necessary for a

project, in its feasibility study stage, to carry out an environmental impact

assessment. The EIA report of Sihe Coal-bed Gas Power Plant (Sihe Plant) has

been finished by the EIA Center of Meteorological Science Research Institute of

China (MSRIC) and approved by SEPA on Jan. 30 2003. The EIA report after gas

turbine combined cycle device was alternated is going to be approved further. The

auxiliary 110kV power transmission project is in the charge of Jincheng


4

Municipal Environmental Protection Bureau and its environmental impact

registration form has been approved by this bureau.

2.3 International conventions that the PRC is party to The PRC is party to a series of international conventions such as The Convention

on Biological Diversity 1992, The Convention on Wetlands, Ramsar, Iran, 1971,

Antarctic-Environmental Protocol, Antarctic Treaty, Desertification, Endangered

Species, Hazardous Wastes, Ozone Layer Protection, World Heritage Convention

and so on. For the Climate Change-Kyoto Protocol, the PRC has signed but the

Protocol is not ratified.

Sihe Plant is expected to use coal-bed gas for power generation. It is good for

reduction of greenhouse gas emission and protection of ozone layer.

2.4 Policies on environmental protection of the World Bank 2.4.1 The World Bank has established guidelines to ensure that borrowers can express

appropriately environmental impacts incurred by their propose d projects. They

must consider various alternative schemes of the project to be constructed,

develop control measures to alleviate the unavoidable impacts and ensure the

implementation of these measures.

2.4.2 The World Bank Operational Policy on environmental assessment (OP4.01)

provides general guidelines for the preparation of EIA reports.

2.4.3 In the appraisal stage, the World Bank screens projects according to their

potential adverse environmental impacts. Projects are designated into catalogue

A, B, C or F1. Sihe Plant will yield electric power with coal-bed gas. It is

designated as catalogue B. EIA shall be conducted upon the Project accordingly.

2.5 Environmental standards in China, the World Bank and World Health Organization (WHO)

2.5.1 The environmental standards of China Sihe Plant shall meet are shown in table

2.5-1.


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2.5.2 The World Bank issued relevant emission standards and ambient air quality standards which can be used for power plants.

Table 2.5-2 shows the World Bank general environmental protection guidelines for power plant.

Table 2.5-3 shows ambient air quality guidelines of the World Bank and World Health Organization.

Table 2.5-4 shows wastewater effluent standards for thermal power plants by

the World Bank.

Table 2.5-5 shows recommended noise standards by the World Bank.

2.5.3 Nowadays, there is no emission standard for non-road machine in China. It

should include emission limits for gas engine as Sihe Plant will use. Therefore

emission limits for the Plant can not be provide d from PRC. The corresponding

World Bank emission standard will be followed for the EIA .

State Environmental Protection Administration

State Environmental Monitoring Station

Shanxi Provincial Environmental Monitoring Station

Jincheng Municipal Environmental Monitoring Station

Shanxi Provincial Environmental Protection Bureau

Jincheng Municipal Environmental Protection Bureau


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Fig 2.1-1 PRC Environmental Administrative System

Yangcheng County Environmental Monitoring Station

Yangcheng County Environmental Protection Bureau


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Table 2.5-1 PRC Standards Implemented in EIA of Sihe Plant

Table 2.5-1a PRC Ambient Air Standards

Standard name Standard Value (mg/m3)

SO2 NO2 TSP PM10

Hourly average 0.5 0.24 - -

Daily average 0.15 0.12 0.30 0.20

Ambient air

quality standard

(GB3095-1996)

Annual daily avg. 0.06 0.08 0.15 0.10

Table2.5-1b PRC Integrated wastewater discharge s tandards (mg/l)

Item

Data

Integrated waste water discharge

Standard GB8978 -1996( Grade 1)

pH 6-9

Oil 5

COD 60

BOD 20

SS 20

Volatile 0.5

NH3-N 15

Table 2.5-1c PRC Standard of noise assessment( Leq dB(A))

Standard value

dB( A) Functional area Implemented standard

Day Night

Environment/area

Standard of environmental noise of

urban area( GB3096—

93) catalogue?

65 55

Sudden noise at night Standard of environmental noise of

urban area( GB3096—93)

No allowable to

15dB over standard

value

Boundary (industrial

zone)

Standard of noise at boundary of

industrial enterprises( GB12348—

90) catalogue?

65 55


8

Work time per

day

limit dB( A)

Work place Standard of design sanitary of

industrial enterprises( GBZ1—2002)

8 4 2 1

1/2 1/4 1/8

85 88 91 94 97

100 103

No higher than 115dB(A) at the most

? Electromagnetic radiation

The following is recommended limits by HJ/T24-1998 Technical regulations on

environmental impact assessment of electromagnetic radiation produced by 500kV

ultrahigh voltage transmission and transfer power engineering .

• For radio interference of high-voltage power transmission lines, Radio

interference limits for high-voltage AC aerial transmission lines (GB-15707-

1995) states the limit is less than 55dB(µV/m) when making measurement at

0.5MHz at 20m away from the projection of side lines on the ground in sunny

days.

• There is no national standard for electric field intensity and magnetic field

intensity of ultra-voltage power transmission facilities. Now 4kV/m is

recommended as the assessment standard for electric field intensity in residential

area; and 0.1mT recommended by International Radiant Protection Association,

for magnetic field intensity for public all-day radiation.

The World Bank has no standards on this respect. Similar projects in China meet the

above criteria.

Table 2.5-2 World Bank General environmental Guidelines for Engine -Driven

Power Plants

Environment Criteria


9

Resource

Air emission

For gas engine power plants, attention in EIA should be paid

especially to NOX emission. For ambient levels of ozone less than

120µg/m3 (8-hour) and nitrogen dioxide less than 150µg/m3 (24-

hour), the maximum emission level is 2000mg/m3 (15% O2 content,

dry) for projects receiving funding applications after July 1 2000. In

other cases, the maximum emission level is 300mg/Nm3 (15% O2

content, dry)

Ambient air

quality

WHO and World Bank recommended limits are shown in Table

2.5-3. It has a priority to meet PRC local and national standards if

they are available.

Water Refer to table 2.5-4, requirements on wastewater by the World Bank

Noise The World Bank stipulated the maximum limits for ambient noise

and increment based on background noise. See table 2.5-5.

Table 2.5-4 World Bank effluent standards for engine -driven power plants

parameter Maximum (mg/L)

pH

Total suspended solids

Oil and grease

Temperature increase

6-9

50

10

no less or equal to 3? a

a The effluent should result in a temperature increase of no more than 3 degree Celsius at the edge of the zone

where initial mixing and dilution takes place. Where the zone is not defined, use 100 meters from the point of

discharge provided there is no sensitive aquatic ecosystem within the mixing zone.

Table 2.5 -5 the World Bank ambient noise standard

Function domain Allowable max per hour (dB)

Daytime (07:00-22:00) Night time (22:00-07:00)

Residential area and

education and research area 55 45

Industrial zone and business 70 70


10

area

The max increment of 3dB is allowed to ambient noise.


11

3. General description of the Project

3.1 Project name, size and primary composition (1) Project name

Sihe Coal-bed Gas Power Plant (Sihe Plant)

(2) Construction unit

Jincheng Anthracite Mining Corporation of Shanxi Province (JAMC)

(3) Size and composition

? Total installed capacity: 105.6MW.

? Auxiliary projects

• 2 gas tanks, 3000m3 each

• 5 compressors, four sets working and one set spare

• 4 water wells, 30m3/h of output each

• 2km of water piping

• 100m of gas piping

3.2 Principle of coal-bed gas generation Air enters into turbocharger from air filter and reaches the mixer. At the same

time, coal-bed gas goes into the mixer after pressure control valve. The mixed gas

of filtered air and coal-bed gas is deflagrated by electric firing and pushes the

piston and crank to move and rotate, which drives the engines to generate. And

then exhausted gas enters into exhaust heat boiler to produce steam and drives the

steam turbine to generate power. See figure 3.2-1.

There are totally 96x0.975MW gas engines in the Plant. And one exhaust heat

boiler is connected with every 6 engines. There are totally 16 sets of exhaust heat

boilers. Every 4 boilers are connected with 1x3MW steam turbine. The Plant has

4 section plants. Every section plant is fitted with 24 gas engines, 4 exhaust heat

boilers and 1 steam turbine.


12

3.3 Geographical position and justification

3.3.1 Geographical position and justification

3.3.1.1 The mining area of JAMC is located in the south-east of Shanxi Province at

the southern foot of Taihang Mountain (see figure 3.3-1). It crosses Jincheng

Municipality, Zezhou County, Yangcheng County and Qinshui County. The

proposed Sihe Plant is located at industrial square of Sihe mining area within

Panzhuang village, Qinshui County in the west of Jincheng mining area.

Topography around Sihe Plant site is composed of low mountains, hills and river

valleys.

Downtown of Qinshui County lies to the northwest toward west and 33.2km

away the Plant. Jincheng urban area lies to southeast toward east and 37km away

from the Plant. Yangcheng County downtown lays to southwest toward south

and 17km away the Plant.

3.3.1.2 The Plant site is closed to Hou (ma)-Yue (shan) railway on the east. On the

east of the railway is Qinhe River 310m away from the Plant. On the south of the

Plant is the coal-bed Gas Extraction Station of Sihe mining Industrial Square.

This station will supply the Plant with gas. On the west of the Plant is a 7m-wide

road for the mining area to transport coal gangue.

3.3.1.3 There is no village beside the Plant and the nearest villages around is

Qinzhuang Village 500m away on the west, Yinzhuang Village about 650m

away on the southeast, Liuzhuang Village 1000m away on the north and

Panzhuang Village 1300m away on the northeast.

3.3.1.4 Besides Hou-Yue railway on the east of the Plant, there are arterial highways

northward to Changzhi and Taiyuan, southward to Jincheng and westward to

Houma.

3.3.1.5 Land elevation within 3km away from the Plant site is between 530-770m; and

relative elevation within 1km away from the Plant site is 50m or so.


13

3.3.2 Justification

(1) Electric power system

3.3.2.1 At the end of 2000, the total installed capacity of Shanxi Province is

12839.43MW, of which 1950MW is supplied to power grids of Beijing-Tianjin -

Tangshan area, south power grid of Hebei Province and power grid of Yulin

area of Shanxi Province. Generating power of the whole Shanxi Province

reachs 62.07 billion kWh in 2000 and increased by 9.47% of the last year. And

generating power consumption within the province was 50.21 billion kWh,

9.99% higher than 1999.

3.3.2.2 Jincheng Municipal power grid is the terminal of Shanxi Provincial power

grids. There is no large supply source in the grid today. (6x350MW Yangcheng

Power Plant is a special project supplying Jiangsu Province with electric power.)

Jincheng Municipality belongs to power import area. It is anticipated that

Jincheng Municipality would lack of over 1000MW capacity till 2010.

Construction of Sihe Plant will decrease power import and enhance safety and

economical efficiency of the power grids.

3.3.2.3 Relatively perfect power generation and supply system has come into being in

the JAGC mining area. Nowadays, there is a total installed capacity of 52MW, of

which 4x2MW (experiment units) Sihe Pilot Plant supplying power and heat

together put into production recently. Two 110kV substations in service within

the mining area are Laoqu 110kV Center Substation and Chengzhuang 110kV

substation with the main transformer capacity of (2x31.5+16)MVA and

2x16MVA separately. There are 9 substations 33.5kV each to supply radiantly

power by the above two substations.

3.3.2.4 The output of power from the Plant is to connect 110kV transmission lines

directly with 110kV Duanshi Substation in the system and then interconnect with

Jincheng power grid. Those 110kV lines are approx. 6km long and of LGJ-240

type. See figure 3.3-2.

(2) The project benefits


14

3.3.2.5 Jincheng mining area holds in store abundant coal-bed gas resource, which

guarantees enough fuel for the proposed power plant. Building a power plant

here can reduce fuel transportation pressure and save investment as building a

coal-fired power plant at a pit mouth.

3.3.2.6 Coal-bed gas is concomitant of coal mine. In excavation of coal mine, gas

must be drawn off before normal production of coal mining. Applying coal-bed

gas in generation is a favorable measure to preserve energy. It can save 266,100

tons of raw coal annually compared with construction of the same capacity coal-

fired power plant.

3.3.2.7 Coal-bed gas extraction for generation can reduce threat to safe production of

coal mines. If there is plenty of coal-bed gas in coal mine, it will incur explosion

easily. It is obvious that coal-bed gas extraction for generation can reduce gas in

coal mine and accordingly eliminate threat to coal mines to avoid explosion.

3.3.2.8 Building of Sihe Plant can decrease emission of greenhouse gases. Essential

ingredient of coal-bed gas is CH4 listed at the second place of greenhouse gases

after CO2. If coal-bed gas is discharged to air instead of being used, it will

increase greenhouse gases. Utilizing coal-bed gas in generation is in

conformance with Kyoto Protocol and helpful to environmental protection.

3.3.2.9 As a kind of clean energy, coal-bed gas generation can hardly emit SO2 or dust

with no solid waste in comparison with coal fired power plant. This is very

helpful to environment.

3.3.2.10 Approximately 100m away from the gas tank of the Plant, there is a Gas

Extraction Station in operation in Sihe mining. As long as the two extraction

pumps with an output of 260m3/minute are replaced with another two of

460m3/minute, the station can meet requirements of the Plant and save

investigation.


15

3.4 Layout in the plant site

3.4.1 Specification and environmental facilities of Sihe Plant are shown in Table 3.4-

1.

3.4.2 Sihe Plant site covers an area of 75,209m2 approximately. A requisition of an

area of 75320m2 is made for the Project without re moval of residents. The land

of the area need to be leveled off and then is divided into three levels according

to elevation: at 585.00m level is section plants and auxiliary buildings; at

574.00m level is No. 1 gas tank; and at 568.00m level is No. 2 gas tank. Grade of

slop on the site is 5‰, convenient to discharge water on the ground. Side slope

and breast wall should be fitted at joint of several steps. The recommended

layout of the Plant site is shown in Figure 3.4-1.

From the layout, 110kV transmission lines are located on the northeast. Water

piping, about 2km long, imports water from shallow ground water on western

bank of Qinhe River. There are 4 section plants and steam turbine house is

separately arranged on the north of each section plant. Exhaust heat boilers and

generator coolers are fitted outdoor.

3.5 Fuel and air pollution mitigation

3.5.1 Fuel

3.5.1.1 Fuel for Sihe Plant is coal-bed gas called gas. Coal-bed gas for the Plant is

supplied by Sihe mining area where the content of coal-bed gas reaches 15.04-

19.53m3 per ton of coal. And reserve volume of gas there is 20,662.81Mm3 with

an exploitable volume of 7,430.37Mm 3. Coal-bed gas content and reserve

volumes and exploitable volume are shown in Table 3.5-1.

3.5.1.2 According to coal-bed gas extraction system of Sihe mining designed by

Branch institute of Chongqing Coal Science Research Institute, designed

extraction capability is 200m 3/min at initial stage and final designed capability is

400m3/min. Based on 400m3/min, it is calculated that Sihe mining gas can be

exploited for service for 36 years.


16

3.5.1.3 Contents of pure coal-bed gas of Sihe mining are shown in Table 3.5-2

according to information provided by Branch institute of Chongqing Coal

Science Research Institute.

3.5.1.4 The permanent coal-bed gas extraction system under Sihe mines was put into

operation in Mar. 2001. Approximately 100m away the gas tank of the Plant, the

Gas Extraction Station has now four gas extraction pumps. Two 260m3/min

extraction pumps need to be replaced with another two 460m3/min pumps.

Designed extraction amount year by year is shown in Table 3.5-3.

3.5.1.5 Consumptions of natural coal-bed gas in coal well by gas engines of the Plant

are shown in Table 3.5-4.

3.5.1.6 According to coal-bed gas extraction plan, till 2004 gas extraction amount can

reach 102. 44MNm3 per year (converted into pure coal-bed gas), and pure gas

consumption will be 91.2MNm3 per year when the first gas engines (48 engines)

are to be put into service in 2004. Till 2006 gas extraction volume can reach

136.5MNm3/year, and pure gas consumption in total per year will be

136.8MNm3 when the second gas engines (24 engines in the Plant) are put into

service in 2006. Till 2008 gas extraction volume can reach 187.49Mm3/year, and

pure gas consumption per year in total will be 171.52Mm3 when the third gas

engines (24 engines in the Plant) are put into production in 2008. Coal-bed gas

extraction can meet gas consumption demand properly.

3.5.1.7 Sihe Plant will build 2x3000m3 wet gas tanks for gas consumption of more

than 1 hour.

3.5.2 Ambient air pollution mitigation

3.5.2.1 Main pollutants of the Project are NOX, SO2 and dust which can be ignored.

Emission concentration of NOX is 180mg/Nm3 (15% O2 content, dry) and 212kg

per hour in total for 96 gas engines.


17

3.5.2.2 In the original feasibility study report, each exhaust heat boiler is connected to

a stack. There are 16 stacks in total with height 40m and. inside diameter 3m of

every stack. A stack emits 13.25kg/h of NOX. This scheme is unfeasible for

environment. So the consultant expert recommends every 4 exhaust heat boilers

are connected to one stack. There are 4 stacks in total with the height of 60m and

inside diameter of 2m each. The NOX emission is 53kg per year from each stack.

3.6 Noise pollution and mitigation 3.6.1 Noise pollution

3.6.1.1 Noise pollution comes mainly from gas engines, steam turbines, coal-bed gas

compressors and cooling towers.

3.6.1.2 Noise level of each above said equipment is between 80-95 dB (A).

3.6.2 Mitigation

3.6.2.1 Noise pollution can be mitigated through equipment option, indoor equipment

arrangement, installations of sound absorption and insulation cages, vibration

insulation of the base and exhaust mufflers and so on.

3.7 Water supply and water treatment 3.7.1 Water source and makeup water system

3.7.1.1 Industrial water of Sihe Plant comes from shallow ground water on the bank of

Qinhe River. It is planned to dig four wells beside Qinhe River with an output of

30m3/h each, 120m3/h totally. Water in the wells will be lifted by pumps and go

into a 1000m3 water reservoir in the Plant through about 2km-long piping. The

application for taking water was approved by Shanxi Provincial Water Source

Management Committee with Jin Shui Zi Fa [2003] No. 57 Document. Sihe

Plant will make wells on the benchland within approx. 300~500m-wide area

along Yinzhuang-Liuzhuang-Lizhuang reach of Qinhe River. Find the benchland

position in Figure 3.3-2.Water for living is to be supplied by the domestic water

supply system of Sihe mining.

3.7.1.2 Cooling water system of steam turbines of Sihe Plant contains condenser

cooling water, oil cooler cooling water and air cooler cooling water. The Plant


18

use secondary circulating water supply system with cooling towers. Every steam

turbine is equipped with one 1000m3/h of mechanical drought cooling tower.

3.7.1.3 The circulating water amount of cooling water system is 3784m 3/h (see Table

3.7-1) and makeup water is 87m3/h. Makeup water of the whole Plant is 100m3/h

plus unexpected water (see Table 3.7-2).

3.7.1.4 Water balance diagram is shown in Figure 3.7-1.

3.7.2 Feed water treatment

Industrial water treatment

3.7.2.1 At northeast corner of Sihe Plant is a 1000m3 reservoir of which water is used

for industrial water, chemical water treatment, circulating cooling feed water and

fire fighting water.

3.7.2.2 Production water is supplied by two feed pumps beside the reservoir.

Additionally there are two fire pumps for supply of fire fighting water.

Boiler feed water treatment

3.7.2.3 The exhaust heat boiler feed water treatment system comprises: reverse

osmosis and demineralising system using mixed bed ion exchange resins .

3.7.2.4 Sterilization and scaling prevention is conducted upon circulating cooling

water by radio-frequency energy of particular spectra from high frequency

electromagnetic wave. And a kind of “all rust cleaning” equipment is used to

filter and absorb iron ion, suspended substance, bigger organic molecule, colloid,

deposit and other impurity.

3.7.3 Wastewater treatment

3.7.3.1 Proposed wastewater treatment scheme of Sihe Plant is shown in Table 3.7-1.

3.7.3.2 The Plant designed 35t/h effluent volume of which 7t/h is reused for washing

and irrigating and 28t/h is discharged to Sewage Treatment Station of Sihe

Industrial Square (STS).


19

3.7.3.3 Industrial system water goes into circulating water system directly. Drainage

of cooling towers can be reused for floor washing and irrigating green-land. The

excess drainage of cooling water is discharge to STS directly.

3.7.3.4 Domestic sewage, Oil contaminated wastewater , acid and alkaline wastewater

are discharged to STS after respective treatments by septic tank, oil and water

separator and neutralization pond.

3.7.3.5 Rain water will be discharged to Qinhe River through separate piping in the

Project.

3.7.3.6 It is concluded that other water would not be discharged to environment

directly except rain water in the Project.

3.7.3.7 The sewage treatment station of Sihe industrial square was put into operation

in July, 2002. Outgoing water quality from the station is in compliance with

primary standard for urban secondary sewage treatment plants of Integrated

Wastewater Discharge Standard (GB8978-1996) (Table 3.7-4). Sihe Plant is

located in STS area and effluent volume of the Project has been considered in

accommodation volume plan of the station in Jiafeng Town 1.5km away eastern

boundary of Sihe Plant.

3.8 Total pollutant emissions 3.8.1 Main pollutants of Sihe Plant after its completion are NOX and wastewater

which are given in Table 3.8-1.

3.9 Transportation engineering outside the plant

3.9.1 Transportation piping for coal-bed gas

3.9.1.1 A permanent extraction system under the mine has been built on the south of

Sihe Plant. As described in 3.5.14, extraction amount of the station can meet

demand of the Plant. The Gas Extraction Station is about 100m away from gas

tanks of the Plant.


20

3.9.1.2 The 100m-long coal-bed gas piping goes through barran land.

3.9.2 Water supply pipeline

3.9.2.1 Water source of the Plant comes from shallow ground water of Qinhe River

through the 2km-long water piping toward reservoir in the Plant.

3.9.2.2 With the pipe diameter of DN150, the water piping goes by Qinhe River bank

and crosses over Hou-yue railway.

3.9.3 Power transmission system

3.9.3.1 The 6km-long 110kV transmission lines of two circles go out of Sihe Plant

from north east of the plant and reach the 110kV Duanshi Substation connected

with Jincheng Municipal power grid.

3.9.3.2 The lines cross over Hou-yue railway, Qinhe River, highways at county level,

35kV and 110kV transmission lines. They do not go through any residential area

or village.

3.9.3.3 There are totally 18 towers with an average distance of 352m between two

towers. Most towers are terminal towers, strain towers and angle towers etc .

3.9.3.4 Wires are of LGJ-240 type and arranged at upper, medium and lower levels.

3.10 Construction schedule 3.10.1 Sihe plant construction schedule is shown in Table 3.9-1.


21

Figure 3.2-1 Outline of coal -bed gas generator principle

Coal-bed gas

Pressure control valve

Mixer

Turbocharg

er

Air filter

Deflagrated by electric firing

Piston moves and crank rotates

Generate Exhaust gas into exhaust heat boiler

Steam turbine

Engines

Air


22

Table 3.4-1 Major equipment and environmental facilities

Item Sihe 105.6MW coal-bed gas power plant

Installed capacity

and date of putting

into operation

105.6MW

till 2004, 52.8MW

till 2006, 26.4MW in addition

till 2008, 26.4MW in addition

Gas engines

96x0.975MW=93.6MW

Every 24 gas engines compose a section plant, 4 section plants

totally

Steam turbine 4x3MW=12MW

Exhaust heat boiler 16 sets of exhaust heat boilers, 16x4.4t/h

Generator

Voltage level of generators fitted with gas engines is 3.3kV.

Voltage level of generators fitted with steam turbines is 3.3kV.

Capacity is 3.75MAV; cooling method is water cooling.

Stack height and

inside diameter of

its outlet

16 stacks, each has the height and inside diameter of 40m and 3m;

the consultant expert suggests 4 stacks, each has the height and

inside diameter of 60m and 2m.

Control effect of

NOX emission 180mg/Nm3 (dry, 15% O2 content)

Cooling system

Secondary circulating water supply system with cooling towers

(the steam turbines are fitted with 4 mechanical drought cooling

towers)

Treatment of

drainage

Discharge to the STS of Sihe Industrial Square after separate

primary treatment.

Coal-bed gas

compressor 5 sets of centrifugal compressors

Gas tank 2x3000m 3 wet gas tanks


23

Table 3.5 -1 Content, reserve and exploitable volume of coal-bed gas of Sihe

mines

Mine fie ld

scope ( 91.2km2)

Coal-

bed

No.

Content

volume( m3/t)

Reserve

volume ( Mm3)

Exploitable

volume ( Mm3)

3 18.11 4109.52 1808.19

9 15.16 563.95 242.5

15 26.51 3254.37 1529.55

Western area of

Sihe

mining( 24.8km 2)

Subtotal 7927.84 3580.24

3 7.67 3712.59 705.39

5 7.67 468.63 84.35

6 7.67 432.13 82.1

9 10.26 1237.46 296.99

15 14.66 3049.29 897.34

Eastern area of

Sihe

mining( 52.9km 2)

Subtotal 8900.1 2066.17

3 14.76 1823.3 802.25

9 19.57 396.29 190.22

15 24.17 1651.28 791.48

Spare area( under

administration of

Sihe) ( 13.5km2)

Subtotal 3834.87 1783.96

Total 20662.81 7430.37

Table 3.5 -2 Contents of pure coal -bed gas of Sihe mining

Content (%) Coal bed

number CH4 CO2 N2 C2- C8

No.3 94.06 2.90 3.02 0.02

No.9 96.98 2.19 0.78 0.05

No.15 95.54 2.18 2.21 0.07


24

Note: The data in the above table come from data of Pan No.2 mine and low heat value is 35,160kJ/Nm3.

Table 3.5 -3 Designed extraction amount under Sihe mines year by year

Year 2003 2004 2005 2006 2007 2008 2009 2010

Pure coal-bed

gas( MNm3) 85.62 102.44 105.83 136.50 170.14 187.49 197.01 204.03

Annual coal-bed

gas under

mines( MNm3)

188.36 225.37 232.83 300.30 374.31 412.48 433.42 448.87

Table 3.5 -4 Consumption of coal-bed gas by gas engines of the Plant

Item Unit

Pure coal-

bed gas

amount

Extraction amount of

coal-bed gas under

mines

Hour ly consumption per set Nm3/h 271.5 587

Daily consumption per set Nm3/d 5973 12914

Annual consumption per set MNm3/y 1.90 4.109

Engine numbers of a section

plant Set 24 24

Annual consumption per section

plant MNm3/y 45.6 98.62

Total engine number Set 48 48 Year

2004 Annual consumption MNm3/y 91.2 197.24

Total engine number Set 72 72 Year


Year Total engine number Set 96 96


25


Note:1) Low value of heating (LVH) of coal-bed gas is 35.16MJ/Nm3( 8412kCal/Nm3) . 2) LVH of extraction

gas under mines is 16.31MJ/Nm3( 3902kCal/Nm3) . 3) Daily equipment full operation time is 22 hours and

annual equipment full operation time is 7000 hours.

Table 3.7 -1 Circulation cooling water volume (t/h)

Item Volume per unit Number Subtotal volume

Condenser 876 4 3504

Oil cooler 30 4 120

Air cooler 40 4 160

Total volume 946 3784

Table 3.7 -2 Feed water volume (t/h)

Item Feed water volume Remark

Evaporation loss of cooling

tower 45

Draught loss of cooling tower 9

Drainage of cooling tower 23

Reused for floor

washing and green land

irrigating, discharge to

STS

Chemical water workshop 10

Subtotal 87

Unexpected water 13 15% of the above

Total 100

Industrial water system 10 Reused for feed water of cooling towers

Domestic water 6 From domestic water supply system of Sihe

industrial square

Table 3.7 -3 Main wastewater effluent and treatment of the Project

Wastewater Effluent mode

Effluent volume

(t/h)

Main pollution

factor

Treatment method Discharge to


26

Drainage of circulating

water Continuous 23 Salt No

treatment

washing and irrigating and

STS Boiler

exhaust water

Continuous 0.8 Salt Cooling STS

Acidic and alkaline

waste water Discontinuous 1 pH and

salt Neutralizing STS

Boiler acid cleaning

water

One time for several years 100 pH and SS Neutralizing STS

Oil contaminated wastewater

Discontinuous 5 Oil Oil and water

separation STS

Domestic sewage

Discontinuous 5 COD and BOD

Septic tank STS

Table 3.7 -4 Designed discharged water quality of TST of Sihe Industrial Square

Pollutant COD BOD5 NH3-N Oil SS Volatile

hydroxybenzene

Received water quality 180 150 13.0 2.0 200 0.001

Discharged water

quality 54 15.0 6.0 2.0 20.0 0.001

Class I limit (GB8976-

1996) 60 20 15 5 20 0.5

Table 3.8-1 Summary of pollutant emissions of Sihe Plant

Item Unit Emissions

Generating capacity MW 105.6

Pure coal-bed gas consumption Mm3/y 187.49

Pure coal-bed consumption Mm3/h 0.0268


27

NOX emission t/y 1,484

NOX emission t/h 0.212

Wastewater discharged to STS t/h 28


28

4. Environmental baseline

4.1 Basis of assessment

4.1.1 Environmental impact assessment class

4.1.1.1 The World Bank classified the Project into “category B”. EIA of category B

will exam possible active and negative environmental impacts incurred by the

project. It will recommend measures to prevent, eliminate, relief or make up for

unfavorable impacts and improve environment.

4.1.1.2 According to Chinese regulations: “Technical Guidelines for Environmental

Impact Assessment” HJ/T2.2-93 issued by SEPA in 1993, atmospheric

environmental impact assessments are divided into three classes according to the

pollutant discharge amount, complexity of surrounding topography and

implemented air quality standard etc. The first class work is complicated, the

second is moderate and the third is simply. Atmospheric environmental impact

assessment for Sihe Plant is classified as the third class.

4.1.1.3 Surface water environmental impact: In the light of Technical Guidelines for

Environmental Impact Assessment HJ/T2.3-93 issued by SEPA in 1993, the

surface water environmental impact assessments are divided into 3 classes

according to wastewater discharge amount and water quality, surface water scale

and quality requirement. The first class environmental impact assessment work is

complicated; the second is moderate; and the third class is simple. No need to

implement surface water EIA if a project has less than third class surface water

EIA condition and then surface water environmental impact is only need to be

analyzed. Surface water EIA for Sihe Plant is less than the third.

4.1.1.4 Noise environmental impact: In the light of Technical Guidelines for

Environmental Impact Assessment----Noise Environment HJ/T2.4-1995, noise

environmental impact assessments are divided into three classes according to

project scale, noise requirement of a project location, and noise level change

before and after a project is built. The first class noise environmental impact


29

assessment work is complicated; the second is moderate; and the third class is

simple. Noise environmental EIA of the Project is defined as class three.

4.1.1.5 According to Directory on classified management of environmental protection

for construction projects (State Environmental Protection Administration,

executive on Jan. 1, 2003), the 110kV power transmission project of the Project,

located in non-sensitive area, belongs to those demanding of preparing

environmental impact forms (projects in sensitive area demands of preparing

EIA reports). This EIA describes relevant content based on environmental impact

form requirements.

4.1.2 Assessment area

4.1.2.1 The atmospheric impact assessment area, as defined in Technical Guidelines

for Environmental Impact Assessment (HJ/T2.2-93) is in the area 3km wide in

latitudinal direction and 5.5km long in longitude direction.

4.1.2.2 The noise impact assessment area is in 700m area centering the Plant. And

boundary noise impact assessment area is at 1m outside the Plant boundary.

4.2 Topography, geology and geomorphology

4.2.1 Geographic position of Sihe Plant is located at 35°36´N and 112°31´E covered

with low hills mostly. Topography of the region where the Plant is locate d

presents high in the west and east part and low in the middle part. Qinhe River

runs through the middle of the region from south to north. See Figure 4.2-1.

4.2.2 Geological structure within Sihe mining area is simple with little faultage and no

magma activity. Furrow and groove cross vertically and horizontally in mining

field. Top of hills is mostly covered by loess. Both sides of Qinhe River are flood

land. The Plant site is located on stage land of class II on the west of Qinhe River

covered with loess.

4.2.3 At western side of south foot of Taihang Mountain, geomorphology of Sihe Plant site

belongs to denudation hills.


30

4.2.4 The ground elevation within 3km area centering the Plant is between 530-770m;

and the relative drop in level in 1km area centering the Plant is 50m.

4.2.5 As identified by Shanxi Provincial Bureau of Seismology, the basic intensity in

the region is 6 degree.

4.3 Water resource

4.3.1 Precipitation

4.3.1.1 In the region where Sihe Plant is located, the annual average rainfall reaches

627.2mm, the maximum annual rainfall is 891mm, and minimum annual rainfall

is 430mm. Precipitation from June to September covers 60% of annual rainfall.

4.3.1.2 The average evaporation for multi-years is 1680.88m in the region. And

evaporation amount from April to July covers 50% of annual evaporation.

4.3.2 Terrestrial hydrology

4.3.2.1 Rivers in the region where Sihe Plant is located belongs to Qinhe water system

of Yellow River area. The biggest river is Qinhe River, the second is Luwei

River and there are other rivers such as Mazhuang River, Panhe River,

Changzhuang River and Changhe River, which are seasonal streams. See Figure

4.3-1.

4.3.2.2 There are Qinhe River, Mazhuang River and Panhe River within 3km away

the Plant. The latter two rivers are seasonal steams and their flow rate is less than

0.9m3/s when water is available.

4.3.2.3 At about 300m on the east of the proposed Plant site, Qinhe River runs from

north to south and then toward east into Yellow River. Qinhe River is 458km

long and has a drainage area of 12,100km2.

4.3.2.4 According to the hydrological information of 30 years of Runcheng

Hydrometric Station, the maximum flow rate of Qinhe River is 3,050m3/s; the

minimum is 2.5m3/s; that of the biggest flood in a century is 4,473m3/s; and the


31

highest flood level in the proposed Plant area is +541.2m less than elevation of

the Plant site .

4.3.3 Groundwater

4.3.3.1 Near Qinhe River, there is shallow groundwater (i.e. flood land alluvial water)

and deep groundwater (i.e. rock water of Ordovician period).

4.3.3.2. Alluvial flat at intake reach is comparatively developed and 300~500m wide

usually; it is recharged mainly by infiltration of atmospheric precipitation and

especially water leakage of Qihe River; amount of seepage at intake reach is

0.0884m 3/s; lithology of aquifer bed at intake reach is sand and sand gravel with

a width of 12.5m; buried depth of water level is 3~4m or so; flowing yield per

well is 10-30m3/h and action radius reaches 31.5-84.5m; reserve volume of

shallow ground water is up to 3.75 millions m3; ground water here has strong

accommodation capacity and good conditions fit for development and

exploitation, and water quality also meets requirements of Sihe Plant.

4.3.3.3 Buried depth of deep groundwater is 600-700m with poor exploitable

conditions.

4.3.3.4 Based on the analysis report by Shanxi Provincial Water Resource Research

Institute, water quality of shallow groundwater is good and can meet

requirements for use by the Plant.

4.4 Atmospheric Resources

4.4.1 Climate of the region

4.4.1.1 The region where Sihe Plant is located belongs to semi humid area of warm

and humid zone of East Asia monsoon region with continental climate and clear-

cut seasons.

4.4.1.2 There is no meteorological station around the Plant. According to studying of

EIA center of Meteorological Science Research Institute of China, the typical

meteorological station nearest the Plant is Jincheng Meteorological Station


32

approx. 37km away on the southeast toward east. The meteorological element

values are shown in Table 4.4-1.

4.4.1.3 Refer to Figure 4.4-1 wind direction rose diagram of the year of 2000, of Jan.,

Apr., Jul. and Oct. in 2000 and of 1956-1990 by Jincheng Meteorological

Station.

4.4.1.4 Associative frequencies of wind direction, rate and stability of 2000 by

Jincheng Meteorological Station are shown in Table 4.4-2.

4.4.1.5 The meteorological observation of boundary layer was conducted in 1992 mainly upon

wind direction, wind velocity and mixing layer height in Panzhuang Village where Sihe

industrial square is located. The observation results are shown in Table 4.4-3, Table 4.4-4 and

Table 4.4-5.

4.4.2 Existing ambient air quality of Sihe mining area

Atmospheric pollution sources

4.4.2.1 There is no big industrial pollution source wit hin the assessment area of Sihe Plant except

a 4x2MW coal-bed gas pilot power plant and Jiafeng Power Plant 3.5km away. Pollutant

emissions of the two plants are shown in Table 4.4-6.

4.4.2.2 Coal consumption of the residents within the area where Sihe Plant is located and pollutant

emissions are shown in Table 4.4-7.

Ambient air quality monitoring

4.4.2.3 In 1992, Jincheng Municipal Environmental Monitoring Station (JMEMS) monitored SO2,

NOx and TSP for continuous 7 days in some places around the proposed Plant site i.e.

Yinzhuang Village (at 0.8km on the southeast of the Plant), Panzhuang Village (at 1.3km on

the northeast of the plant) and Jiafeng Power Plant (at 3.5km on the south of the Plant).

JMEMS monitored SO2 and NOx again in March 2002 in Yinzhuang Village and Liuzhuang

Village and the proposed Plant site.

4.4.2.4 The monitoring points and their function areas are shown in Table 4.4-8 and Figure 4.4-2.

Monitoring results analysis

• Sulphur dioxide


33

4.4.2.5 Most daily average ground concentrations of SO2 of summer and winter in

1992 monitored in Yinzhuang Village and Panzhuang village are between

0.012~0.024 mg/Nm3, taking up 16% of Class II of PRC Ambient Air Quality

Standard. Very little max concentration occurred in winter is 0.076mg/Nm3,

taking up 50.6% of Class II limit. The daily average ground concentrations of

SO2 monitored in March 2002 are between 0.003~0.018 mg/Nm3, taking up

2%~12% of Class II standard limit .

• Nitrogen oxide

4.4.2.6 The daily average ground concentrations of NOX in summer and winter in

1992 monitored in Yinzhuang Village and Panzhuang village are between

0.006~0.026 mg/Nm3, taking up 6%~26% of Class II (0.10 mg/Nm3 for NOX)

of PRC Ambient Air Quality Standard. The daily average ground

concentrations of NOX monitored in March 2003 are between 0.016~0.059

mg/Nm3, taking up 13%~49.1% of Class II (0.12 mg/Nm3 for NO2) of PRC

Ambient Air Quality Standard.

• Total suspended particulate

4.4.2.7 Monitoring results of TSP in 1992 in Panzhuang Village, Yinzhuang Village

and Jiafeng Power Plant were higher than the standard limits, which has

something to do with naked earth in this area.

4.4.2.8 Monitoring results of SO2, NO2 (NOX) and TSP of 1992 and 2003 are shown

in Table 4.4-9 and 4.4-10.

• Conclusion

4.4.2.9 The monitoring results show: in the place where Sihe Plant is located, ground

concentration of SO2 is below the limits of Class II of PRC Ambient Air Quality

Standard and there is still quite big environmental capacity for SO2. The ground

concentration of NO2 is still below the limits of Class II standard and there is

also certain environmental capacity for NOX. The ground concentration of TSP

in 1992 above the limits resulted principally from kick-up dust incurred by dry

climate and naked earth.


34

4.5 Acoustical environment

4.5.1 On Mar. 4~6 2003, JMEMS monitored boundary noise and environmental noise

quality status quo.

4.5.2 Eight monitoring points were arranged for monitoring boundary noise. And

there were 5 points arranged in the area centering the Plant site for environmental

noise monitoring.

4.5.3 Monitoring was made at daytime and nighttime separately. During specified

period, Leq noise was measured for continuous ten minutes at every point every

time.

4.5.4 The monitoring results of boundary noise and environmental noise are shown in

Table 4.5-1 and Table 4.5-2.

4.5.5 From environmental noise, major objectives to be protected are Qinzhuang

village and Yinzhuang Village, of which noise at daytime was 55~57dB(A) and

at nighttime was 45-49.9dB(A), not higher than Catalogue III of Standard of

Environment Noise of Urban Area (65dB at daytime and 55dB at nighttime).

4.5.6 Noise levels in the proposed plant site and at boundaries are between 45~49

dB(A) at daytime and 45-49.9 dB(A) at nighttime, both less than Catalogue III

of Standard of Environment Noise of Urban Area (GB3096-93).

4.6 Ecological environment

4.6.1 Sihe Industrial Square where Sihe Plant is located belongs to the land having

been or going to be developed. The occupied land is barren loess. There is no

rare and endangered plant or animal.

4.7 Health and safety

4.7.1 Professional health and safety in the Gas Extraction Station

4.7.1.1 The Gas Extraction Station supplies Sihe Plant with coal-bed gas. As long as

the two extraction pumps with an output of 260m3/minute are replaced with


35

another two of 460m3/minute, the station can meet requirements of the Plant

construction.

4.7.1.2 There is 12 staff in the Gas Extraction Station working in three shifts and 3-4

persons each shift. Safety of the station relates to production safety of the Plant and

human safety of workers.

4.7.1.3 There are good management system and safety measures, mainly including the

following:

l Naked flame forbidden. No smoking.

l Electric ignition forbidden. A person must turn off his mobile phone before

he enters the station. No vehicle allowed into the station.

l There is gas venting system in the station to ensure extraction safety.

l There is strict entrance guard system and persons beyond the staff can not

be allowed into the station unless they get permission.

l All switches of electric appliance are against blast.

l Workers on duty are equipped with protective clothing and relevant

furnishment for emergency cases.

4.7.2 Professional health and safety in the Plant

4.7.2.1 Sihe Plant is a power plant using coal-bed gas for generation. In the

production process there exist dangers and contingency.

4.7.2.2 Leakage in storage and transportation of coal-bed gas is a major danger factor

incurring fires and explosion.

Process Hazards

4.7.2.3 Installation and maintenance of safety devices to prevent over-pressurization

of boiler tubing is critical for the protection of employees and equipment.

4.7.2.4 Electrical power generation and transmission poses hazards to workers. High

voltage may be encountered at turbine generators and associated wiring.

Incidental safety and health hazards


36

4.7.2.5 Hazards incidental to the process but occurring as a result of process

operations include:

----gas tank leakage

----leakage of gas piping and relevant valves

----heat stress

----exposure to hot steam lines and equipment

4.7.2.6 Additional safety and health hazard to be considered as part of the operation of

a power plant include the following:

----Working surface (such as floors, ladder, stairs, etc.)

----Emergency exit placement and maintenance

----High noise exposure

----Chemical exposure (including incidental use materials for maintenance, etc.)

----Handling of flammable and combustible material

----Exposure to hazards of working in confined spaces (boilers, vessels, etc.)

----Fire prevention and protection

----Materials handling and storage

----Machine and equipment mechanical guarding

----Biohazards

----Ergonomic design operation of work stations

Regulatory framework

4.7.2. 7 The list of PRC laws, regulations and standards on labor safety and health are

given in Annex F.

4.7.2.8 PRC Labor Law stipulates rights and obligations of labors and protection of

labors. Labor departments at all levels have relevant policies.

4.7.2.9 JAMC has its regulations of labor protection and corresponding rules and

regulations.

4.7.2.10 Sihe Plant will prepare labor safety and protection regulations of every post

when it is built up. The Plant will also strengthen relevant management to


37

prevent occurrence of labor safety accidents and to protect lawful rights and

interests.

4.8 Social and economic environment

4.8.1 Jincheng Municipality governs two areas and four counties i.e. the urban area,

suburb area and Qinshui, Yangcheng, Gaoping and Lingchuan Counties.

4.8.2 Jincheng Municipality has a total population of approx. 2 millions and the

industrial and agricultural output per capita is up to 2000 Yuan (RMB).

4.8.3 In whole Jincheng Municipality, there are over 700 industrial and mining

enterprises mainly taking up coal, metallurgy, building materials and chemical

industry etc. business.

4.8.4 Principal agricultural products of Jincheng Municipality are wheat, corn, foxtail

millet, sorghum, cotton and beans etc.

4.8.5 Sihe Plant is located at the edge of Sihe mining area where coa l columns are

reserved to protect the mining area. Its construction and operation have no

impact on coal mining.

4.9 Human culture and natural landscape

4.9.1 The 10km area centering Sihe Plant does not belong to natural conservation

region. And there is no historical and cultural relic to be discovered yet in the

area.

4.10 Land utilization

4.10.1 The place where Sihe Plant is located is defined to be industrial land proposed

to be developed.

Table 4.4-1 Average values of meteorological elements by Jincheng Meteorological Station

Meteorological

element Data Meteorological element Data


38

Annual average temp 10.9? Leading wind direction in

summers

S; 15%

Max. temp in extreme

condition 37.3? Average wind velocity in

summers 1.5m/s

Min. temp in extreme

condition -16.3? Leading wind direction in

winters NW; 17%

Frost-free period 180 days Average wind velocity in

winters 2.3m/s

Max. frost penetration 430mm Annual average wind

velocity

2.2m/s

Annual max rainfall 891mm Annual average

evaporation amount 1,680.88mm

Annual min rainfall 430mm Average multi-annual

rainfall 627.2mm

Note: Average rainfall of multi-years reaches 627.2mm.


39

Table 4.4 -2 Associative frequency of wind direction, wind velocity and stability of Jincheng meteorological station in 2000 ( %)

Stabilit

y

U10(m/

s)

N NN

E

NE EN

E

E ES

E

SE SSE S SS

W

SW WS

W

W WN

W

N

W

NN

W

C f U10(m/

s)

B <1.5 0.25 0.22 0.2

6

0.87 1.60 1.01

<1.5 0.06 7.23

1.6~3.0 0.28 0.16 0.25 0.25 0.25 0.23 0.55 0.23 0.27 0.2

6

C

3.1~5.0 0.2

0

0.7

3

0.50 0.54 0.8

2

0.55 1.1

0

3.24

<1.5 0.82 1.00 0.67 0.6

4

1.0

0

0.26 0.54 0.25 0.2

6

0.2

7

0.55 0.2

7

0.80 8.82 44.39

1.6~3.0 0.28 0.28 0.25 0.42 0.16 0.5

0

1.4

0

1.42 0.56 0.54 0.5

5

0.31 0.5

5

0.27 0.2

8

0.79

3.1~5.0 0.03 0.28 0.45 0.53 0.25 0.5

1

1.4

2

1.62 4.86 0.26 0.2

8

0.2

7

1.02 1.9

3

0.25

D

5.1~7.0 0.15 0.5

1

0.52 0.28 0.2

6

1.00 1.6

3

2.82


40

>7.0 0.08 1.0

9

0.20

<1.5 0.57 0.54 1.34 1.45 1.06 0.7

5

1.4

2

0.81 0.55 0.53 0.82 0.8

2

0.54 0.5

4

0.25 9.28 32.25

1.6~3.0 0.56 0.27 0.54 0.80 0.25 0.5

0

1.0

0

1.18 1.35 0.27 0.2

8

0.29 0.5

5

0.8

1

0.53

E

3.1~5.0 0.26 0.14 0.52 0.2

6

0.2

7

0.35

1.12

<1.5 0.28 0.27 0.79 0.55 0.56 0.5

2

0.20 0.8

1

0.2

7

0.25 0.53 4.23 14.53 F

1.6~3.0 0.82 0.14 0.5

0

0.5

0

0.58 1.37 0.5

5

0.25 0.5

6

1.15

f 3.90 1.80 5.30 4.00 3.20 3.6

0

8.5

0

7.84 10.6

0

2.30 3.0

0

0.60 4.6

2

4.78 9.0

0

3.70 23.2

6

f1 2.23 0.99 1.62 2.10 0.91 2.2

1

5.5

6

6.57 9.51 1.30 1.1

1

0.60 3.2

6

3.44 7.9

3

2.12 48.3

6

U10(m/

s)

1.72 1.86 1.70 1.67 1.44 2.0

0

2.4

0

2.78 3.02 1.79 1.5

6

2.00 2.4

0

3.23 4.3

1

2.44


41

Symbol description: f- total frequency of wind direction or stability; f1- wind direction frequency when light wind filtered; U10- average

ground wind velocity of each wind direction or every kind of stability.

Table 4.4-3 Synchronous observation data of ground wind direction and wind velocity on Panzhuang Village site and at Jincheng

meteorological station (Feb.18-Mar. 18, 1992)

O bservatio

n point

Wind direction

frequency and

wind velocity

N NNE NE EN E E ESE SE SSE S SSW SW WS

W

W WN

W

NW NN

W

C

Wind

direction

frequency( %

)

9.3 4.7 4.0 3.1 0.3 1.0 1.0 3.1 5.5 5.3 2.1 0.1 0.6 1.0 2.1 4.9 Panzhuang

Village

U10(m/s) 1.9 1.5 1.2 1.2 1.4 1.5 2.3 2.0 1.9 2.2 2.0 1.0 1.9 2.9 2.7 2.1

51.7

Wind

direction

frequency( %

)

4.9 6.3 2.5 2.5 0.6 1.7 3.9 6.0 5.3 4.2 1.0 0.1 0.7 2.5 6.8 4.1 Jincheng

U10(m/s) 2.3 2.5 2.2 1.3 1.0 1.8 2.0 1.9 2.0 1.6 1.9 2.7 1.9 1.7 2.0 2.0

46.9

Table 4.4 -4 Observation data of wind direction frequency (%) at different heights on Panzhuang Village site (Feb.18 -Mar. 18, 1992)

Height away the

ground (m)

N NE E SE S SW W NW


42

50 39.6 8.3 2.1 0 22.9 8.3 4.2 14.6

100 43.8 2.1 0 0 18.8 12.5 4.2 18.8

200 38.3 4.3 2.1 2.1 21.3 4.3 4.3 23.4

400 34.0 0 0 0 19.2 4.3 4.3 38.3

600 6.4 4.3 6.4 14.9 10.6 6.4 10.6 40.4

800 16.3 2.3 11.6 18.6 7.0 0 9.3 34.9

1000 9.5 2.4 9.5 16.7 9.5 2.4 9.5 40.5

Table 4.4-5 Observation data of mixing layer height on Panzhuang Village site (Feb.18-Mar. 18, 1992)

Time 10:00 11:00 13:00 15:00 17:00 19:00 20:00

Mixing layer height (m) 279 479 1009 1372 1303 738 563

Table 4.4 -6 Investigation of industrial atmospheric pollution sources in the assessment area

Emission amount (t/ y)

Pollution source name

Equipment

Coal

consumption( t/y

) Dust NOX SO2

Precipitator and

its efficiency

Stack

height (m)

Relative position

and distance

(km)

Sihe 4x2MW pilot

power plant

4 sets of gas turbine heat & power

combiners of QDR20 type

Use natural gas as

fuel 14.1 25 SW, 0.1

Jiafeng Power Plant of

Qinshui County 4 sets of boilers 95,994 788.88 506.20

Water film

?= 95%

80 S, 3.5

Table 4.4-7 Investigation of residential coal consumption and pollution sources in the assessment area

Resident Population of the residents Village area (? ) Coal consumption Major pollutant emission amount (t/ y)


43

distribution Family number population (t/ y) Smoke dust SO2

Panzhuang Village 474 1599 150000 924.3 32.66 5.03

Jiafeng 715 2389 220000 1394.2 49.00 7.58

Qinzhuang Village 115 403 32000 224.2 7.92 1.22

Yinzhuang Village 215 733 60000 419.2 14.70 2.28

Liuzhuang Village 125 461 36000 243.7 8.61 1.33

Total 1644 5585 3205.6 112.89 17.44


44

Table 4.4-8 Monitoring points

Year No. Monitoring point

Position and

distance

( km) away the

Plant

Function area

1 Yinzhuang

Village SE? 0.8 Residential area

2 Panzhuang

Village NE? 1.3 Residential area 1992

3 Jiafeng Power

Plant S? 3.5 Industrial zone

1 Yinzhuang Village SE? 0.8 Residential area

2 Liuzhuang Village N? 1.0 Residential area 2003

3 The Plant site Industrial zone

Table 4.4 -9 Daily average ground concentrations of

SO2? NOX? TSP( 1992) mg/Nm3

Monitoring point SO2 NOX TSP

Summer 0.012-0.016 0.014-0.016 0.311-0.671 Panzhuang Village

Winter 0.028-0.076 0.007-0.022 0.155-0.464

Summer 0.012 0.018-0.027 0.243-0.476 Yinzhuang Village

Winter 0.012-0.024 0.006-0.026 0.147-0.523

summer —— —— 0.334-0.834 Jiafeng Power Plant

Winter —— —— 0.212-0.411

Ambient Air Quality Standard,

class II

0.15 0.12(NO2) 0.3


45


46

Table 4.4-10 Ground concentrations of SO2? N O2( in Mar. 2003) mg/Nm3

SO2 NO2 Monitoring

point Daily

average Hourly average

Daily

average Hourly average

Liuzhuang

Village 0.003-0.018 0.003-0.031

0.016-

0.059 0.010-0.112

Yinzhuang

Village 0.003-0.015 0.003-0.039

0.016-

0.043 0.011-0.115

The Plant site 0.003-0.007 0.003-0.048 0.015-

0.058 0.003-0.204

PRC standard,

class II 0.15 0.5 0.12 0.24

Table 4.5-1 Monitoring results of boundary noise

Daytime dB( A) Nighttime dB( A) Location

Leq National standard Leq National standard

E 45.1 65 45.2 55

W 46.2 65 47.1 55

S 46.8 65 46.3 55

N 45.5 65 45.1 55

SE 45.8 65 47.2 55

SW 46.5 65 47.4 55

NW 45.3 65 46.5 55

NE 45.4 65 45.8 55


47

Table 4.5-2 Monitoring results of environmental noise of status quo

Monitoring point Period Result Noise from

Day 57.3 Society and traffic Eastern side of Qinzhuang

Village Night 49.9 Society

Day 55.6 Society and traffic Northwest side of Yinzhuang

Village Night 45.2 Society

Day 45.7 Society and traffic Proposed plant site

Night 42.2 Society

Day 61.1 Industry Gas Extraction Station

Night 58.1 Industry

Day 65.6 Industry At the boundary of the

4×2MW Sihe Pilot Power

Plant toward Qinzhuang

Village Night 69.1 Industry


48

5. Environmental Impact Assessment

5.1 Environmental impact identification and pollu tion factor screening

5.1.1 The principal environmental impact predicated during Sihe Plant construction

and operation is shown in Table 5.1-1.

5.1.2 The principal pollution factors to be considered during construction and

operation of Sihe Plant and transfer projects are shown in Table 5.1-2.

5.2 Operation Period

5.2.1 Atmospheric Impact

Emission

5.2.1.1 Table 5.2-1 shows the stack gas emission from Sihe Plant in comparison with the Chinese

and World Bank Standards.

5.2.1.2 There is no emission standard for gas engines in China. NOX Emission from

Sihe Plant meets relevant World Bank standard 2000mg/Nm3 (dry, 15% O2

content).

Prediction of ground construction atmospheric pollutants

5.2.1.3 We calculate impact on ground NO2 concentration incurred by NOX emission

from Sihe Plant with the recommended model in “Technical guideline on

environmental impact assessment----atmospheric environment” (HJ/T2.2-93)

which includes the models when windspeed is small and under calm and windy

model. The model recommended by the guideline belongs to the same system as

the first generation air quality model of USA. Topographic correction is

considered in the model calculation (see Annex C).


49

5.2.1.4 The first calculation scheme is consistent with the feasibility report. There are

16 exhaust heat boilers connected with 16 chimneys of which inside diameter is

3m and height is 40m. NOX emission of every chimney is 13.25kg/h at the

temperature of 160? approximately. Emission velocity is 11.65m 3/s in this case.

Under the condition, except that average annual NOX concentration does not

exceed the standard, average daily NOX concentration and NOX concentration of

an hour are both higher than the standard limits and maximum hourly

concentration is as four times as the limit (shown in Table 5.2-2). It is obvious

that too scattered pollutant emission scheme will produce greatly heavy impact

on ground NOX concentration. It is unfeasible.

5.2.1.5 The consultant expert recommends that 4 chimneys in every section plant

should be combined to form a 60m-high stack w ith inside diameter 2m ( the

construction unit has been solicited; they think it feasible and this scheme is

feasible technically). Thus there are 4 stacks instead of 16 stacks in the Plant and

then NOX emission will be 53kg/h per stack, outlet velocity of every stack will

be 46.6m3/s and flue gas temperature will be about 160? .

The predicted results in this case are given in table 5.2-2. It shows that in this

case ground NOX concentration meets class II of Ambient air quality standard

(GB3095-1996) (Average annual NOX concentration----0.08mg/Nm3, average

daily NOX concentration----0.12 mg/Nm3 and NOX concentration of an hour----

0.24 mg/Nm3). Ratios of corresponding predicted values to the standard limits

are separately 4.4% , 72.5% and 55% , also in compliance with standards of the

World Bank and WHO.

5.2.1.6 The constructio n unit is deliberating the issue of increasing single unit

capacity, upgrading evaporation rate of an exhaust heat boiler, using low

nitrogen burning technique, reducing NOX emission concentration to 90mg/Nm3


50

(dry, 15% O2 content) by means of adjusting ratio between ingoing gas and fuel.

Feasibility of the scheme needs further demonstration.

5.2.1.7 World Bank Thermal Power Guidelines for New Plants stipulates calculation

method for stack height (see Annex C). Stack height 60m is in compliance with the

requirements. However 40m height is not in compliance with the requirements.

5.2.2 Water Environment impact assessment

Reliability of water supply

5.2.2.1 Industrial water of Sihe Plant comes from shallow ground water on the bank

of Qinhe River. It is planned to dig four wells beside Qinhe River with an output

of 30m3/h each, 120m3/h totally. It can satisfy demand of Sihe Plant makeup

water (100m3/h). Water for living is supplied by the sanitary water supply system

of Sihe mining area.

5.2.2.2 Demonstration Report of Water Resource of the Project prepared by Shanxi

Provincial Water Resource Research Institute passed review and examination by

experts organized by Shanxi Provincial Water Resource Committee in June

2003. The report writes that, alluvial flat at intake reach is comparatively

developed and 300~500m wide usually; it is recharged mainly by infiltration of

atmospheric precipitation and especially water leakage of Qihe River; after

calculation, amount of seepage at intake reach is 0.0884m3/s; lithology of aquifer

bed at intake reach is sand and sand gravel with a width of 12.5m; buried depth

of water level is 3~4m or so; flowing yield per well is 10-30m3/h and action

radius reaches 31.5-84.5m; reserve volume of shallow ground water is up to 3.75

millions m3; ground water here has strong accommodation capacity and good

conditions fit for development and exploitation, and water quality also meets

requirements of Sihe Plant. Sihe Plant will make wells on the benchland within

approx. 300~500m-wide area along Yinzhuang-Liuzhuang-Lizhuang reach of

Qinhe River. Find the benchland position in Figure 3.3-2.


51

5.2.2.3 From section 5.2.2.2, it is obvious that intake of 700 thousand m3/y for

production water by Sihe Plant can be guaranteed.

5.2.2.4 In August 2003, Shanxi Provincial Water Resource Management Committee

approved the apply for water intake of Sihe Plant by Jinshuizifa [2003] No. 57

“Approval on previous apply for water intake license by Sihe coal-bed gas power

plant of Jincheng Anthracite Mining Group Co. Ltd of Shanxi Province”.

Cooling water system impacts

5.2.2.5 Sihe Plant adopts secondary circulation cooling tower system. Every steam

turbine is fitted with a 1000m3/h mechanical drought cooling tower.

5.2.2.6 Except water loss through evaporation and mobile air, the cooling tower

discharge 23t/h of drainage.

5.2.2.7 Although drainage of cooling towers has relatively high salt content, there is

no requirement on the drainage in standards of China and the World Bank. The

part of this drainage 7t/h can be used for irrigating green-land and floor washing

and the excess water 16t/h can be discharged directly to STS (shown in Fig.3.7-

1).

Other wastewater discharges

5.2.2.8 Except the said drainage from cooling towers, other waste water effluents

12t/h, which is discharged into STS after separate treatments. The Sewage

Treatment Station lies in Jiafeng Town 1.5km away eastern boundary of Sihe


52

Plant. Effluent volume of the Project has been considered in accommodation

volume plan of the station.

5.2.2.9 The drainage from boilers contains a little high salt. The amount is only

0.85t/h. It will be cooled in the cooling pond to be built in the Plant and discharged to

STS.

5.2.2. 10 Acid and alkaline wastewater (1t/h) finally runs into the Sewage Treatment

Station of Sihe Industrial Square (STS) when its pH value reaches 6-9 after being

treated in the neutralization pond of 50m3 in the Plant.

5.2.2.11 Oil contaminated waste water (5t/h) runs into STS when its oil content is less

than 2.0 mg/L after being treated in oil and water separator.

5.2.2.12 Domestic wastewater (5t/h) runs into STS when its COD concentration

reaches 180mg/L and BOD concentration reaches 150mg/L after preliminary

treatment in septic tank.

5.2.2.13 Acid cleaning water of boiler is produced one time within several years and

is discharged 100t/h every time. This water runs into the STS after neutralizing

and deposition treatment.

5.2.2.14 Rain water is discharged through special piping net.

5.2.2.15 In general cases, waste water of Sihe Plant will neither result in pollution in

surroundings nor affect Qinhe River.


53

5.2.2.16 Outgoing water from STS meets Class I of PRC Integrated Wastewater

Discharge Standard for township secondary sewage treatment plants. It meets

also World Bank standard.

5.2.3 Noise impact prediction and assessment

Source strength of noise source

5.2.3.1 Audio frequencies of noises produced by equipment of the Plant are

principally at medium and low levels. Noise sources of the Plant are mainly

engines, steam turbines, coal-bed gas compressors, water pumps and exhausting

noise. According to noise levels of regular equipment in the Plant and the

analogy prediction, major noise equipment and their noise levels after mitigation

measures are shown in table 5.2-3.

Prediction model

5.2.3.2 Affected by the factors of propagation distance, air absorption, reflection and

shield of buildings etc. defilades, sound level of the noise in the Plant will

attenuate when the noise is propagated from source point to receiver point.

Regarding impact on some receiver point by several noise sources, energy

superposition method will be used for receiver point.

5.2.3.3 Noise source intensity adopted in the model and numbers are listed in table

5.2-3. Grid used in the model is 25x25m according to the general layout. (See

figure 5.2)

Prediction results

5.2.3.4 From the predicted results, the Plant when completed will have certain impact

on noise environment; however, the impact on the area beyond 200m away

boundaries of the Plant is within 55dB(A), in compliance with catalogue 3 of


54

Standard of environmental noise of Urban Area( GB3096—93) . Moreover, the

area within 200m away the Plant boundary is in the industrial zone without

sensitive objectives. Form the view point of overall impact, noise impact

incurred by the industrial zone composed of the Plant, the pilot plant and Gas

Extraction Station is less than 65dB(A), fully in compliance with the requirement

of industrial zone ambient noise less than 70dB(A) in “Environmental Noise

Standard of the World Bank”.

5.2.3.5 Noise levels on working sites are in compliance with Chinese Hygienic

Standards for the Design of Industrial Enterprise (GB321-2002) when noise

insulation and sound absorption indoor etc. measures are taken.

5.2.4 Fire and blast prevention

Background

5.2.4.1 Major of the Project is coal-bed gas i.e. gas whose basic characteristic is

combustible and explosive. Even if in normal environment, gas is very easy to

incur combustion and blast. Its characteristics of combustion and blast are shown

in table 5.2-4.

5.2.4.2 CH4 content of Sihe mining gas is about 46%( V/V) . Once gas leaks and

mixes with air, it is quite easy to reach upper explosive limit. If the mixed gas

meets flame or involved in high temperature environment at this time, it is very

easy to incur blast. Comparatively low lower explosive limit can make leaking

gas become cloud cluster and explosion danger will not be eliminated until the

cloud cluster is diffused in quite a long distance.

Analysis of causes

5.2.4.3 The possible causes of coal-bed gas accidents are broken piping, damaged

valves and cracked gas tank. However, gas transportation distance outside the


55

Plant is about 100m not too long and the number of valves is quite small

accordingly. Relatively speaking, accident rate caused by piping and valve

damage is comparatively lower; while accident possibility caused by cracked gas

tank is comparatively higher.

5.2.4.4 Major causes of gas tank cracking are water seal failure of the gas tank or

defects of the gas tank body.

l Reasons of water seal failure are welding defect or seal distortion incurred by

wind pressure interference. For the latter situation, it is possible that distance

between structures is very short producing mutual wind pressure interference. At

this time, pulsation wind pressure endured by the lower structures two times that

of single structure, which can cause damage or failure of structures.

l Gas tank defects include initial defects such as material quality defect, improper

processing, erection defect in construction, residual stress, different material of

bolts from body material and improper connector seal.

Analysis of impact

5.2.4.5 Accidents incurred by coal-bed gas leakage bring heat radiation impact on

buildings by fire when leaking gas meets fire. Such accidents will bring cloud

cluster blast because methane gas meets fire to blast for CH4 concentration in

explosive limits (see Table 5.2-4) when leaking gas meeting air to form cloud

cluster.

--Heat radiation impact incurred by fire accident

5.2.4. 6 In the report by EIA Center of MSRIC, coal-bed gas leakage rate is 1.36kg/s;

CH4 leakage rate is 0.5kg/s; only 20% skin of injured personnel is naked from


56

his dressing; skin of the dead is exposed all; heat radiation impact on buildings is

calculated based on the conditions of judgment on timber ignition.

5.2.4. 7 Heat radiation impact incurred by fire is principally limited in gas tank area

whose safe distance is bigger than 5m.

--Cloud cluster blast

5.2.4. 8 EIA Center of MSRIC considers calculation conditions of cloud cluster blast

in its relevant reports: gas leakage rate is 1.36kg/s; CH4 leakage rate is 0.5kg/s;

cloud cluster forms by coal-bed gas leaking in continuous 15 minutes and total

CH4 quantity reaches 450kg at this time. The report also involves with

calculation of blast of cloud cluster diffusion.

5.2.4. 9 Persons within 29m outdoor will be affected by cloud cluster blast and

buildings 11m away will be damaged. There is generally no impact on section

plants on the north and coal-bed gas compressing station on the northeast of the

Plant.

5.2.4. 10 Range of influence by c loud cluster blast mainly depends on atmospheric

stability and wind direction. Dangerous cloud cluster in stable air has the longest

max transference distance. If gas keeps leaking for continuous 15 minutes, max

transference distance is 150m. Now if blast happens, max radius of influence on

outdoor persons and buildings is 13.5m and 5m separately.

5.2.4.11 Leading wind direction in the assessment area is NW wind direction. Most of

areas of the Plant are possible to be affected by blast of cloud cluster diffusion.

Hou-yue railway is 110m away on the east of the gas tank. Providing that

continuous leakage duration of coal-bed gas can be controlled no higher than 5


57

minutes and west wind frequency is less than 1%, Hou-yue railway will not be

affected in general cases. Villages around the Plant 600m away will not be

affected by gas cloud cluster blast.

Measures

5.2.4.12 The following safe measures have been considered in design of Sihe Plant:

·General arrangement of building components meet requirements on safe

distances and fire passages stipulated by relevant fire prevention regulations.

·Fire rating of all buildings conforms to ratings defined in relevant regulations

and rules.

·Gas leakage alarm is fitted in coal-bed gas compressor house. Master control

room and indoor distribution house are fitted with fire alarm etc. fire fighting

facility.

·In building design, places with potential explosion danger are fitted with

explosion release, personnel safe retreat and alarming etc. measures.

·Explosion doors are installed on the site of pressure vessels, pump stations and

compressor stations.

·To fit facilities of lightning prevention and electric shock prevention.

·Heat insulation measure is taken for heat equipment and piping to keep

temperature of outer wall no less than 50? .

5.2.4.13 Special attention should be paid to fire prevention and blast within gas tank

area as below.

·Two gas tanks should be arranged vertical to leading wind direction so as to

avoid distortion of gas tank seals caused by wind pressure interference.

·To guarantee quality strictly whether in design or construction so as to avoid

potential danger caused by gas tank quality or construction problems.


58

·The gas tank should be fitted with lightning arresters and switches of electric

apparatus around should be of blast protection.

·There should be fire fighting facility conformed to relevant requirements in

gas tank area.

·Gas tank area should be assembled several fuel gas alarms.

·The gas tank should be fitted with exhaust masts toward air to discharge gas.

·To set monitor systems of gas tank leakage and fire alarm.

·Naked flame and static spark forbidden.

5.2.4.14 Establishment of regulations and rules on safety in production

·To make safe production plan and carry out periodically incident counter

exercises.

·To stipulate no smoking in the whole Plant.

·To strengthen safety education for personnel of the Plant.

·Personnel concerned should get to the site within 5 minutes to deal with

accidents as soon as they receive an alarm report.

·Personnel responsible for dealing with accidents should be fitted with

corresponding protective clothing and protective measures.

5.3 Impact outside plant area

5.3.1 Transportation piping of coal-bed gas

5.3.1.1 The gas piping from the existing permanent Gas Extraction Station on the

south of Sihe Plant to gas tank area of the Plant is 100m approximately.

5.3.1.2 The place gas piping goes through is barren land with no resident around.


59

5.3.1.3 It will not cause impact on surroundings as long as gas piping qua lity is

reliable, erection is acceptable and connector valves at both ends have no

leakage.

5.3.1.4 It will be safer when gas piping is buried under ground if possible.

5.3.2 Water supply pipe line

5.3.2.1 The 2km-long water piping of DN150 goes by Qinhe River bank and crosses

over Hou-yue railway.

5.3.2.2 There is no sensitive creature, cultivated land or resident in the place water

piping goes through. If attention is paid to safe construction of water piping

crossing Hou-yue railway, no impact would be produced on surroundings.

5.3.3 Transmission Engineering

Background

5.3.3.1 The 6km-long 110kV transmission lines of two circles go out of Sihe Plant

from northeast of the Plant and reach the 110kV Duanshi Substation connected

with Jincheng Municipal power grid.

5.3.3.2 The transmission line crosses over Hou-yue railway, Qinhe River, 35kVand

10kV lines and highways at county level. It does not cross over any residential

area or village.

5.3.3.3 There are totally 18 towers with an average distance of 352m between two

towers. Most towers are terminal towers and strain towers. Amount of tangent

towers is small because of many crossings.


60

5.3.3.4 Wires of LG3-240 type are to be built double circuits at the same tower and

arranged at upper, medium and lower levels.

5.3.3.5 Every tower foundation takes up an area of 36m2 and total 576m2 of land is

occupied by towers except terminal towers. Land to be occupied belongs to

Qinzhuang Village, Liuzhuang Village, Guonan Village and Guobei Village.

Impact analysis

5.3.3. 6 According to « Technical code for designing 110-550kV overhead

transmission line» , the following requirements should be considered for 110kv

transmission lines crossing. See Table 5.3-1.

5.3.3. 7 From analog analysis, it is concluded that at 1.5 he ight (110kv transmission

line clearance 11m), max power frequency electric field intensity is 1.38kV/m,

far less than the limit of 4kV/m; magnetic field intensity is 0.049x10-3~0.257x10-

3 mT, far less than 0.1mT required by International Radiant Protection

Association for the public radiation in one day and departments concerned in

China.

5.3.3. 8 There are total 18 towers. Tower foundation and land occupation cost is

subject to 10,000 Yuan/tower and young crop compensation is 2875 Yuan/tower.

It is enough for compensation.

5.4 Ecology

5.4.1 Terrestrial Ecology

5.4.1.1 Requisition land of Sihe Plant covers an area of 75,320m2 and belongs to

industrial land. Now it is barren land. The 6km of 110kV transmission line


61

passes through barren land, highways and railway and Qinhe River. There is no

impact on terrestrial ecology.

5.4.1.2 Water piping of Sihe Plant goes through some flood land, which does not

produce any impact on terrestrial ecology.

5.4.2 Aquatic Ecology

5.4.2.1 Sihe Plant does neither take water form any river nor discharge directly

wastewater to rivers, which does not produce impact on aquatic ecology.

5.4.2.2 The 110kv transmission line crosses over Qinhe River and no tower

foundation is set up in the river, which does not produce impact on aquatic

ecology.

5.5 Social economy and living standards

5.5.1 Electricity supply and e conomy

5.5.1.1The basic configuration of Shanxi power grid is power-transmission from the

north to the south. Jincheng Municipality located in the southeast and south area

of power shortage. It is predicted that there is no large power supply source to be

built before 2010 in the southeast part of Shanxi Province power grid. Therefore,

the part is short of electricity and Jincheng Municipality will be lack of more

than 1000MW capacity. Sihe Plant construction can not only settle partially

power shortage problem but also enhance economic efficiency and security of

power grid operation.

5.5.1.2 JAMC plans to attain annual production of raw coal of 4 million tons in

medium terms of Tenth Five -year Plan (year 2001-2005) and attain 800 million

tons per year till 2010. JAMC also plans to construct multi- industrial zone and


62

build high sulfur coal pulping and gas yield etc. industries. Development of these

industries all demand electric power support. It is predicted that JAMC’s annual

total load will reach 131MW in 2010. Sihe Plant construction offer electric

power support to JAMC development. It can also supply excess power for the

network.

5.5.1.3 Coal-bed gas for power-generation can strengthen peak shaving capacity of

the power grid, improve power supply structure, and enhance safe and economic

operation of the power grid.

5.5.2 Public Facilities

5.5.2.1 Sihe Plant makes use of coal-bed gas for power generation to reduce coal-bed

gas in mines, improve safe coal production situation, and increase safe

production factors.?

5.5.2.2 Sihe Plant makes use of coal-bed gas for power generation to decrease

greenhouse gas emission, making contribution to environmental protection.

5.5.2.3 Sihe Plant generation will increase revenue of local government which can be

used for local economical development.

5.5.3 Employment and women status

5.5.3.1 Sihe Plant construction needs a professional personnel team also including

some other personnel to do auxiliary work such as auxiliary building material

transportation, pipe excavation, building rubbish cleaning, and auxiliary work of

civil work etc. Local labor can be absorbed to do such work, which supplies job

opportunities to idle labor.


63

5.5.3.2 The imported mass of construction people will locally increase the

consumption of basic daily necessities and enhance local purchase power.

Consumer demand by the mass of construction people will lead to establishment

of local small shops and small restaurants, which increase job opportunities.

5.5.3.3 There will be 60 permanent staff when the Plant in operation supplying some

jobs.

5.5.3.4 Women participating in Sihe Plant construction all the time take up fit work

and make their contribution as men do. It is undoubted that women have the

same status as men.

5.5.4 Benefit analysis for inhabitants

5.5.4.1 Sihe Plant will not only supply electric power to Jincheng Coal Group but also

to inhabitants in Jincheng Municipality when synchronized. Electric power

supply will strengthen foundation for local economic development.

5.5.4.2 Growth of electric power will improve the situation that urban inhabitants

burn a large amount of coal, increase employment of electric household

appliance, air conditionings and electrical cookers so as to improve life and

living quality of the people.

5.5.4.3 Because Sihe Plant will use gas for generation, 266.1 thousand tons of coal

would be conserved every year compared with the same capacity coal-fired

power plant. That will mitigate environmental pollution incurred by coal fired

generation and enhance living quality of inhabitants.


64

5.5.5 Land Requisition and Resettlement

5.5.5.1Having been agreed with the World Bank, these issues will be discussed in

another specific report.

5.6 Construction Period

5.6.1 Ambient Air Impact

5.6.1.1 Fugitive dust pollution may arise during construction from

·excavating and exploring of land

·transportation of construction materials and other equipment

5.6.1.2 The above mentioned dust pollution would last for a short time, with low

intensity. The potential impacts are associated with any large scale construction

project. Impact on the surrounding can be minimized if appropriate mitigation

measures are applied, as discussed in chapter 7.

5.6.2 Water pollution

5.6.2.1 Water pollution can be avoided if the small amount of muddy waste water

produced during construction can be discharged after setting.

5.6.2.2 The dejecta of constructors goes into toilets and then be transported for

agricultural land.

5.6.2.3 The small amount of sanitary wastewater and cement mixing wastewater is

treated by deposition and then used for spray.

5.6.2. 4 The amount of waste water produced during construction period is not large

and most waste water can be reused or evaporated, which would not cause heavy

impact on environment.


65

5.6.3 Solid waste

5.6.3.1 Construction spoils etc. solid waste should be disposed timely at the place

appointed by authorized department.

5.6.3.2 The occupied land should be timely cleaned and recovered for afforestation

when construction is finished.

5.6.4 Noise impact

5.6.4.1 Plant noise during construction period mainly comes from construction and

traffic, etc, for which noise levels are shown in Table 5.6-1.

5.6.4.2 Predicted attenuation distances for construction noise in conformance with

Noise limits for construction site GB12523-90. In general the constructing

equipment with noise level over 100 dB (A) can not be operated simultaneous ly.

If it is necessary for simultaneous operation, it should be in daytime and added

noise level can not be higher than 110 dB (A).

5.6.4.3 The constructors should arrange and manage manipulation of construction

machines properly. Piling is strictly forbidden at nighttime. Cranes and

bulldozers shall not be arranged from 24:00 to 6:00 am of the next day as

possible.


66

Table 5.1-1 Table of Principal Environmental Impacts

Item Environmental Impact A. Environmental Impact From Location

1. Land occupied Occupation of 75,320m2 land, used to be barren land and now proposed industrial land, does not incur any impact on agricultural production.

2.Mine

Sihe Plant is located at the edge of Sihe mining area where coal columns are reserved to protect the mining area. Its construction and operation have no impact on coal mining.

3.Precious ecology No impact

4.Historic cultural No impact

5.Water supply No impact

6.Hydrologic status and flood frequency No impact

B. Environmental issues in the project design

1. Atmospheric pollutants (NOX etc.)

1. Meet relevant standards and carry out monitoring plan.

2.surface water 2. Not to be discharged to Qinhe River except rain water.

3.Ground water 3. No impact on ground water.

4.Noise 4. Certain impact.

5.Cooling water system 5. There is secondary circulating water system with cooling towers and partial drainage is to be used and the excess discharged to STS.

6.The waste liquid of boiler cleaning

6. To be discharged to STS after neutralization treatment.

7.Solid waste 7. Sihe Plant will use Coal-bed gas as fuel. No solid waste would be produced.

8.Fire prevention

Arrangement of buildings meets requirements on safe distances and fire passages stipulated by relevant fire prevention regulations. And fire rating conforms to relevant rules.

9.Blast prevention

Naked flame forbidden around gas tank, gas piping, and in coal-bed gas compressor house. Blast prevention shall be done upon electric apparatus. Alarm devices shall be installed.

10.Satety To fit equipment for lightning and electric shock protection. To take security protection measures upon other facilities.

11 Option of pollution-controlling equipment

The optional environmental protection technology is to be considered to have the relevant criteria attained after treatment.


67

C. Environmental issues during Construction

1.Vegetation 1. Little local impact.

2.Kicked up dust and NOX emission from traffic

2. Some impact

3.Noise and vibration 3. Some impact to the constructors and surrounding people

4.Sanitation facility and constructors living 4. To satisfy relevant sanitation requirements

D. Environmental Impact During Operation

1.Fund 1. Sufficient funds required to ensure the operation and administration of the various environmental protection measures.

2.Personnel Health and Safety

2. Periodic physical examination

3.Fire prevention, blast prevention and safety

3. T o formulate inspection systems of fire prevention, blast prevention and safety. To maintain relevant facilities to guarantee their normal operation.

4.Treatment of pollutants discharged by the plant

4. Meet relevant criteria and carry out monitoring program

5.Transportation effects 5.The noise and dust raised bring some impact to the personnel and inhabitants in the vicinity

E. Off-site transmission line

1.Rare and precious ecology

1. No impact

2.Environmenttal aesthetics 2. Basically no impact

3.Land destroyed and occupied 3. A little barren land

4.Eletromagnetic pollution and noise

4. A little impact

F. Social-economic impact

1.Project occupied land 1. Give compensation to mitigate impact

2.Resettlement 2. None

3.Employment 3. T o provide chances of employee, to increase income of faming and position of women

4.Life level and quality 4. T o satisfy the need for electricity, to improve public facilities and living standards

5.Regional economic 5. T o increase gross national product and taxes

G. Overall explanation of the e nvironment problems

1.Damage to natural conservation region 1. No impact


68

2.Damage and improper utilization of scare resource 2. None

3.Do harm to endangered species 3. None

4.Leading to unreasonable migration of inhabitants 4. None

5.Enlarge the gap between the rich and the poor 5. No effect


69

Table 5.1 -2 the Main Pollutant Factors

Main Pollutant Factors Main Pollutant Sources

Air Water Solid Waste Noise

Constructing machines

High? med? low frequency

Building construction TSP Constructing

rubbish Med? low frequency

Construction period

Constructing workers BOD5

Petroleum Living rubbish

Stack NOX

Main building

High? med? low frequency

Plant drainage SS Operation

period Acid

cleaning water of

boiler

PH? SS? COD

Transportation engineering

Power transmission

line

Electric-magnetic noise

Table 5.2 -1 Comparison Sihe Plant stack NOX emission with standards

Phase Emission (kg/h)

Concentration* (mgNm3)

52.8MW( ? ) in Y2004 106 180

79.2MW( ? ) Y2006+ Y2004 159 180

105.6MW( ? ) Y2004+ Y2006+ Y2008 212 180

World Bank Standard 2000** *Dry and 15% O2 content. ** Ambient levels of ozone less than 120µg/m3 (8-hour) and nitrogen dioxide less than 150µg/m3 (24-hour).


70

Table 5.2-3 Noise source emission and mitigation measures

Noise source Unit number

Noise level

(dB( A) ) Mitigation measures

Mitigation e ffect (noise level drop)

Gas engine 96 95

Noise insulation, vibration insulation of the base,

fitted with exhaust muffler, and noise absorption indoor

10-15

Steam turbine 4 90 Noise insulation, vibration

insulation of the base, fitted with exhaust muffler

10-15

Coal-bed gas compressor 4 85

noise absorption indoor, noise insulation of duty rooms, vibration insulation of the base

5-10

Feed water pump

of exhaust heat

boiler

85

noise absorption indoor, noise insulation of duty rooms, vibration insulation of the base

5-10

Cooling tower 4 80 general arrangement plan

Circulating water

pump house 4 85 To be arranged indoor 5-10

Generators 4 90 Noise insulation at boundaries 5-10

Boiler blow-off 16 120 Silencer for blow -off 20-25


71

Table 5.2 -4 Combustion and explosive characteristics of main components of gas (0? , 101.325kPa)

methane ethane propane Normal butane isobutene Other

hydrocarbon Hydrogen

sulfide item

CH4 C2H6 C3H8 C4H10 i-C4H10 C5-C8 H2S Density kg/m3 0.72 1.36 2.01 2.71 2.71 3.45 1.54

Upper explosive

limit % ( V)

5.0 2.9 2.1 1.8 1.8 1.4 4.3

Lower explosive

limit %( V)

15.0 13.0 9.5 8.4 8.4 8.3 45.5

Self-ignition ? 645 530 510 490 290

Theoretical temperature

of combustion

?

1830 2020 2043 2057 2057

Air quantity

needed for combustion of 1m3 of gas( m3)

9.54 16.70 23.90 31.02 31.02 38.18 1900

Max flame propagation

velocity m/s

0.67 0.86 0.82 0.82 7.16


72

Table 5.3 -1 Requirements of 110kv transmission lines crossing Objective to be crossed Min. vertical distance (clearance)

Railway 12m

Qinhe River 8m

35kV transmission line 3m

110kV transmission line 3m

Highway at county level 7m

Table 5.6 -1 Noise intensity of all kinds of construction equipment

Equipment Noise level dB( A) Referenced

distance( m)

Piler 95—107 15

Mixer 72—90 15

Crane 76—96 15

Bulldozer 96 15


73

Figure 5.2 Noise level distribution of noise environmental impacts of the Plant under the

condition that superposition of noise sources around is not taken into consideration.


74

6. Analysis of project alternatives

6.1 No action

Without increased generating capacity, social and economic development will

stagnate.

6.1.1 Jincheng Municipality is located in the southeast part of Shanxi power grid and

belongs to the area of power shortage. According to power planning and

programming of Shanxi Province, there is no large power supply source to be

built before 2010 for supplying Shanxi Province. Therefore, power shortage of

Jincheng Municipality would reach 1000MW. Construction of the Project can

not only relieve power shortage contradiction but also be helpful to local

economic development.

6.1.2 JAMC plans to attain annual production of raw coal of 800 millions tons per

year till 2010.JAMC also plans to build high sulfur coal pulping and gas yield

etc. industries with high additional values. Development of these industries all

demand for electric power support. Construction of the Project is firstly helpful

to development of JAMC.

6.1.3 The Project will be synchronized with Jincheng power grid and so it will play a

role in supporting economical development of Jincheng Municipality.

Sihe Plant will improve grid system operation

6.1.4 The Project is at the end of Jincheng power grid. Power plants in Jincheng

power gird are all small hydroelectric or thermal power plants most of which

have small units to be superseded. Building power supply source at the end of

power grid can not only abate power shortage situation efficiently but also offer


75

power supply support to end of grid system to improve safety and reliability of

grid operation.

6.1.5 The Project uses gas as fuel. The units start up fast and have strong peak

regulating capacity. Construction of the Project can strengthen peak regulating

capacity of grid system and improve power supply structure of grid system.

Sihe Plant construction will promote local economic development.

6.1.6 Sihe Plant construction is good for development of Jincheng Municipal

economy.

6.1.7 Sihe Plant construction will enhance sales volume of local consumables and

household goods to promote development of relevant departments.

6.1.8 Sihe Plant will draw coal-bed gas from Sihe mining for generation which to

some degree guarantees orderly and safe construction of coal mining, helpful to

coal mining development.

6.2 Plant site alternatives

6.2.1 Sihe mining area reserves abundant coal-bed gas. If the site of analogous plant is

not localized in Sihe mining area, there would be no conditions for using coal-

bed gas for generation.

6.2.2 There is an existing Gas Extraction Station near proposed plant site. If the plant

site is not here, the Plant will need comparatively long gas piping or another gas

extraction system, which would increase investment of the Plant construction.


76

6.2.3 If the plant site is not here, the Plant will need comparatively long gas piping,

which would increase investment not only to plant construction but also to safety

measures.

6.2.4 There were eastern and western site alternatives (see Figure 4.4-2) with the

borderline of Hou-yue railway. The two alternatives have their own advantages

and disadvantages as listed in the following table.

Eastern site Western site

Quite close to Yinzhuang Village Further away from Yinzhuang Village

Further away from the Gas Extraction

Station Closer to the Gas Extraction Station

Quite close to Hou-Yue Railway Further away from Hou-Yue Railway

Construction safety issue appears for

it’s close to the railway Construction safe

6.3 Units replacement

6.3.1 If we choose a gas turbine and its combined cycle device, there are some

advantages----heat efficiency is more than 46%, heat energy of fuel can be used

thoroughly and the equipment can be purchased locally. However, a gas turbine

demands high inlet gas pressure usually above 2.0Mpa. And thus concentration

of CH4 drawn under mines gets into explosive limits with explosion danger.

Therefore, a gas turbine can not be employed.

6.3.2 If we choose generators of gas boilers fitted with steam turbines, heat efficiency

is generally 28% with quite a large amount of water consumption. This will bring


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energy waste and not fit Shanxi area in short of water resource. Therefore, such

generators can not be adopted.

6.3.3 We select a gas generator and its combined cycle de vice in the Project.

Although the system has disadvantages----a number of main units, large land

occupation and relatively high investment; but its heat efficiency is more than

42% and it can operate safely.

6.4 Fuel options

6.4.1 Fuel for generation in the area has two kinds. One is coal and the other is coal-

bed gas. With regard to scale of the Project, both kinds of fuel can meet its

requirements. Nevertheless, coal-bed gas is clean energy and so we choose coal-

bed gas.

6.4.2 If we do not choose coal-bed gas for generation, coal-bed gas will be drawn and

discharged out during excavation of mines, which cause energy waste.

6.4.3 If coal-bed gas is discharged to air instead of being used for generation, it will

bring emission of a large amount of greenhouse gas----CH4, just listed after CO2.

Annual reduced 151.14 millions m3 of CH4 is equivalent to 2.12 millions tons of

CO2.

6.4.4 If coal is selected for fuel, annual coal consumption reaches 266.1 thousands

tons subject to 360 grams of coal consumption per unit kW in grid system. Then

it is equal to extra consumption of 266.1 thousands tons per year in coal fired

power plants of equivalent scale. That will cause energy waste.


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6.4.5 If coal is selected for fuel, coal fired power plants of equivalent scale would

emit extra more than 2661 tons of SO2 every year, extra 532 tons of flue dust

(20% of ash content and 0.5% sulphur in coal), extra 52550 tons of slag and

extra 447.7 thousands tons of CO2.

6.5 NOX emission

6.5.1 NOX emission of gas generator combined cycle devices is less than 180mg/Nm3

(dry 15% O2 content). This is in advanced stage in the world. There is no

relevant standard in China but it conforms to requirements of the World Bank.

6.5.2 Although NOX emission of gas generator combined cycle devices is more than

that of gas turbine combined cycle units, burning coal-bed gas for gas generators

is far safer than for gas turbine.

6.5.3 The calculation results seen in Chapter 5 show that NO2 ground concentration

caused by 16 scattered stacks in the Project in original feasibility study report is

so much over the limit of PRC standard. There is no plume thermal rise

generally. In the meanwhile 40m high stack is not compliance with the World

Bank regulation. It is necessary to recommend new scheme for the Project in

order to reduce ground NO2 concentration contributed by the Project.

6.5.4 The consultant expert suggests that every section workshop be equipped with a

60m-long stack with inside diameter is 2m. Thus equipment configuration is in

line wit h the feasibility report; however, 4 exhaust heat boilers should be Cornish

boilers. Flue gas from 4 exhaust heat boilers will be emitted from one stack

(totally 4 stacks in the Plant) and then outlet velocity of every stack will be

46.6m 3/s (flue gas temperature 160? , dry ), and NOX emission will be 53kg/h,

totally 212kg/h. Ground concentration of NO2 would drop greatly and comply

with relevant standards when this measure is carried out.


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6.5.5 Although NOX emission from Sihe Plant is low, it can be decreased to

90mg/Nm3 (dry and 15%O2 content) through dilution combustion technology

and larger units (e.g. 1800kW).

6.6 Waste water discharge

6.6.1 Waste water of Sihe Plant is treated by decentralized processing and discharged

to sewage treatment station of Sihe industrial square. Accommodation of waste

water from the Plant has been considered in construction of the sewage treatment

station..

6.6.2 If waste water is not discharged to the sewage treatment station, facilities in the

station would not be utilized adequately which causes waste of built facilities.

And in this case, the Plant needs to build new waste water treatment facility in

order to treat waste water of the Plant demanding more capital investment, which

is not economical.


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7. Environmental management program

7.1 Environmental mitigation

A summary table of principal mitigation measures and their associated capital and

running costs is given as table 7.1-1.

7.1.1 Operating period

Environmental management

7.1.1.1 One of the main mitigating measures against adverse impacts from power

station developments is the application of strong environmental management

techniques.

7.1.1.2 A technician is responsible for environmental protection work in Sihe Plant.

The environmental protection work include s: to set up and prepare

environmental management system of the Plant; centralized management and

monitoring by specialized departments of pollutant discharging situation of each

workshop; to be responsible to report relevant data of the Plant pollutant

discharging to superior environmental protection department (Jincheng

Municipal Environmental Protection Bureau); to receive inspection and

supervision of environmental protection by Jincheng Municipal Environmental

Protection Bureau; to monitor and ensure normal operation of pollutant control

measures and safety measures listed in table 7.1-1 and conformation with

requirements and relevant standards of China and the World Bank.

7.1.1.3 Scale of Sihe Plant is not large with simple pollutant emissions. There is no

many staff in the Plant. Personnel of chemical workshop can do periodical

pollutant monitoring of the Plant. Some monitoring work can also be done by

Environmental Monitoring Station subordinated to Jincheng Municipal

Environmental Protection Bureau and the Plant should make a payment.


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Atmospheric pollution

7.1.1.4 NOX is major air pollutant emission of Sihe Plant. When 105.6MW units are

built up completely, NOX emission will reach 212kg/h. and 180mg/Nm3 (dry,

15% O2 content). There is no relevant sta ndard in China . But it is in accordance

with the World Bank’s requirement of 2000 mg/Nm3 (dry, 15% O 2 content).

7.1.1.5 NOX of 212kg/h when Sihe Plant is built up will be emitted through chimneys

of 4 exhaust heat boilers. Each chimney is 60m high with inside diameter 2m.

Refer to detail in 6.5.4.

7.1.1.6 NOX emission of every chimney is 53kg/h. Emission temperature is approx.

160? . Emission velocity is 44.6m3/s.

7.1.1.7 Under conditions described in 7.1.1.5 and 7.1.1.6, predicted NOx ground

concentration is in compliance with Class II standard.

7.1.1.8 NOX emission of Sihe Plant is at low level in analogue power plants. It is

nowadays difficulty to take any further control measures.

7.1.1.9 The main factor of normal NOX emission is to ensure the system in proper

situation during the whole operating period. Attention shall be paid to the factor in

future operation.

Water environment

7.1.1.10 Sihe Plant is to reduce the amount of water being abstracted by the Plant and

enhance the reutilization rate of water. Sihe Plant will discharge the following

wastewater after being treated.

·acidic and alkaline waste water

·oil contaminated water


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·Sanitary sewage is treated in septic pond. This waste water runs into STS after

preliminary treatment.

7.1.1.11 PH value of acidic and alkaline wastewater after being treated will reach 6-9,

with 2.0mg/L of oil content, less than 200mg/L of SS, less than 180mg/L of

COD, and less than 150mg/L of BOD. They meet requirements for going into

STS. Amount of this water reaches 12t/h.

7.1.1.12 Circulating water system treatment adopts mainly physical methods as

bellows:

·“ Mie Jun Lin” kills bacteria with electromagnetic wave of high frequency.

·“Shui Gou Jin” produces resonance in a certain scope by radio frequency

energy of particular spectrum to make old encrustation loose and off.

7.1.1.13 Circulating water effluent just contains high volume of salt. There is no limit

requirement for it by China and the World Bank. T his water of 7t/h will be

reused for green-land irrigating and floor washing and the other 16t/h goes into

STS. Effluent of STS is in accordance with primary standard for township

secondary sewage treatment plants in Integrated Wastewater Discharge Standard

(GB8978-1996) and relevant standards of the World Bank. (See Table 3.7-4).

Noise

7.1.1.14 The Plant is to control the noise emissions from equip ment and workshops to

alleviate noise impacts to the environment. The major noise sources, noise

limiting value and mitigations measures in the Plant are shown in table 5.2-2.

7.1.1.15 The Plant should install suitable control measures such as fitting silencers or

noise enclosures for any equipment with high noise levels. These will include the

measures outlined in Table 5.2-2.


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7.1.1.16 Noise should be a consideration in detailed design and plant layout to

minimize combined effects of noisy equipment, to minimize noise exposure to

workers in the Plant and to guarantee compliance with the noise limitations at the

site boundary. Some tree planting and construction of landscaping measures may

also be used to help mitigate noise levels at the Plant boundary and beyond.

7.1.1.17 Suitable limitations on the number and location of open windows in the Plant

and workshop areas should be considered.

Contingency measures

7.1.1.18 The operation of a power plant presents some potential risks to the

environment, such as oil spills, or chemical spills. To minimize these risks it is

necessary to provide a management system that will identify and minimize risks,

fires and provide systems and facilities to handle any occurrences.

7.1.1.19 It is standard practice to provide bulk storage tanks with an impermeable

bund of sufficient capacity to contain the whole contents of the tank, (or of the

largest tank if several tanks are enclosed), plus a margin for rainwater and fire

fighting water.

7.1.1.20 Where practicable, pumps, valves, couplings, delivery nozzles and overspill

pipes should also be contained within the bunded area. It is also recommended

that pipework leading to or from the bund should be routed over the top of the

bund in order to avoid the need to pierce the wall.

7.1.1.21 Where it is required to remove an accumulation of rainwater, this should be

by means of a system requiring manual supervision, rather than simply to allow

drainage through the bund in an uncontrolled manner.


84

7.1.1.22 Materials should be maintained on site to deal with any minor spills. This

may include oil absorbent booms, to be employed on drainage ditches or the

river and absorbent granules to mop up spills on land.

7.1.1.23 For Sihe Plant, importance should be attached to fire and blast incurred by

coal-bed gas. The Plant should fit gas leakage alarm in gas tank area and ensure

timely treatment of accidents to avoid contingence. In addition, particular

attention should be paid to quality of coal-bed gas tanks, gas piping and relevant

valves in the stage of design and placing an order. It is emphasized to pay

attention to quality inspection in construction and erection to eliminate hidden

dangers of construction possible to incur leakage in future.

7.1.1.24 In order to minimize the potential risks to the environment, it is also

recommended that Sihe Plant should develop and maintain a risk management

plan. This should include a management system and allocation of

responsibilities, process safety information, hazard analysis, assessment of

environmental consequences, incident investigation procedures, emergency

response planning, training requirements and audit system.

7.1.1.25 The engineering outside the Plant includes water supply and coal-bed gas

piping and 6km long 110kV transmission line.

Offsite

7.1.1.26 The possible environmental impacts incurred by engineering outside the

Plant are on landscape etc. The gas piping is very short, just 100m or so and it

goes through waste land, which will not cause impact on ecological environment.


85

If pipe lying under ground is considered in design, it will be safer and will not

occupy any land.

7.1.1.27 The water piping of 2km just goes through waste land and river shoal and

does not pass by farmland, without impact on ecological environment. But it

crossed over Hou-yue railway. In design, it should be considered that it is better

to cross the railway under ground so as to reduce impact on landscape and

railway operation.

7.1.1.28 Max electric field intensity of the110kV transmission line is 1.38kV/m,

magnetic field intensity is between 0.049x10-3~0.257x10-3mT, which has no

impact on surroundings.

7.1.1.29 For the 6km transmission line crossing rivers, the railway, and the 35kv and

10kv transmission lines, it is designed according to relevant criteria and there

reserves certain clearance distances without interference. The line does not cross

over houses and has no impact on residents.

7.1.1.30 The 6km of 110kV transmission line covers a total area of 576m2. The

compensation will be made based on land occupation cost of 10000yuan/tower

and another 2875/tower. Farming production is affected little.

7.1.1.31 The extension of the Plant will incur negligible impact on terrestrial animals

and to protect terrestrial plants is also to protect terrestrial environment.

Visual impact

7.1.1.32 The area around the Plant is industrial zone. Construction of Plant is

harmonious with surroundings.


86

7.1.1.33 The Plant area layout and the color scheme of structures should coordinate

with the surroundings as much as possible.

7.1.1.34 The Plant should consider planting and adding to existing, evergreen woods

for the Plant area and surroundings. Environmental management during

construction will be the responsibility of the Environmental Department and a

few of staff are needed to provide an adequate environmental monitoring and

management system. The surface water drainage produced during construction

should be treated by settlement. Both this and the domestic sewage from

construction workers are used for spraying. Dejecta is discharged to toilets of the

Plant and then transported outside.

7.2 Environmental monitoring

7.2.1 The proposed environmental monitoring to be conducted for the phase 2

development is summarized in table 7.2-1.

7.2.2 An environmental management unit will be established in Sihe Plant with a

technician post taking up environmental protection work.

7.2.3 A number of mitigation features, including stack height, provision of bunds for

oil land bulk chemical storage, and design of cooling water systems, are a simple

matter of ensuring that the design and construction are in accordance with the

mitigation requirements. Essentially this is a quality assurance matter for the

design and construction process.

7.2.4 Monitoring items of waste water and the requirements are given in table 7.2-2

and monitoring points are shown in table 7.2-3.


87

7.2.5 Monitoring NOX emission at outlet of the stack can perform periodical

monitoring (see table 7.2-1). NOX monitoring points in the surroundings can be

localized in Yinzhuang Village and Panzhuang Village----summer monitoring

points in Panzhuang Village and winter monitoring points in Yinzhuang Village.

7.2.6 Noise monitoring is mainly a concern for the Plant area and residential area

(especially Qinzhuang Village). The monitoring frequency is 6 months.

Monitoring should be done when approaching the annual average load, both in

day time and at night (with day time monitoring generally at 08:00~12:00, night

time at 22:00~05:00).

7.2.7 Monitoring items include equipment noise, noise at 1m away the section plant,

boundary noise and noise in nearest village----Qinzhuang Village.

7.2.8 Equipment noise is measured at 1.5m away the equipment. Noise outside the

section plant is monitored at one point separately at southern and northern sides

and at two points separately at eastern and western sides. Boundary noise is

monitored once every 100m.

7.2.9 Noise level is measured as required in relevant regulations of Measuring

Method of Environment Noise of Urban Area (GB/T14623-93), Method of

Measuring Noise at Boundary of Industrial Enterprises (GB12349-90) and Code

of Measuring Noise at Boundary of Industrial Enterprises (GBJ127-88) etc.

7.2.10 The environmental monitoring and supervising items during construction

include TSP, water discharges, mud and construction rubbish etc. noise and

conservation of soil and water.


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7.2.11 The principal instruments and monitoring equipment to be provided are shown

in table 7.2-4.

7.2.12 The contract for construction of the power plant project should include clauses

concerning relevant environmental protection and about situations to be

supervised implemented by local environmental protection department and

power plant. This should ensure that the daily life of residents in the vicinity of

construction site not to be seriously disturbed.

7.3 Responsibilities for mitigation and monitoring

7.3.1 During the initial operational period, the National Environmental Protection

Agency is responsible for checking all mitigation measures and monitoring

systems. This includes all equipment, instruments and institutional arrangements.

This comprises a completion check for the acceptance of the environmental

protection and control equipment.

7.3.2 Following the completion check, the Plant is responsible for operation and

supervision of all mitigation measures and environmental monitoring. The Plant

is required to set up its own Environmental Management Department to carry out

these responsibilities. Day to day management of the various pollution but

overall environmental performance will be monitored by the Environmental

Management Department.

7.3.3 The local Environmental Protection Bureau then has the responsibility of

enforcing the relevant discharge and emission standards. To this end they will

institute their own periodic monitoring and audit arrangements.


89

7.4 Training plan

7.4.1 It is a new issue in China to generate power with gas generators burning coal-

bed gas. The Plant should organize relevant training on NOX emission control.

7.4.2 The Plant should also organize training on how to measure accurate NOX

emission concentration through stack of Sihe Plant.


90

Table 7.1 -1 Power plant Environmental Mitigation Measures Costs

Mitigation of construction impact

Capital cost (106yuan) Running

cost(106yuan/year) NO Item

Local Imported Local Imported

Responsible Authoritied

1a Jincheng Municipal Supervision

&control environmental management department

0 Table 7.2-1 Shanxi Provincial EPB

requires Jincheng Municipal EPB to provide EMD

2 Maintain site house-keeping standars 0.0 0.0 0.0 0.0

3 Wheel wash and road cleaning

equipment for construction period 0.01 0.0 0.0 0.0

Constrction unit& Jincheng Municipal environmental management department

4 Time noisy construction activies

during daytime 0.01 0.0 0.0 0.1

5 Select low noise methods of pile driving where possible

6 Use silencers or construction vehicles 0.0 0.01 0.0 0.1

7 Small amount of oily sewage and slurry is treated by settlement and

then used for spray. 0.0 0.01 0.0 0.1

8 Dejecta to be transported outside for

agricultural use 0.0 0.1 0.0 0.1

Mitigation of operation impact-on site

1b Supervision &control by

environmental department 0.0 0.0

Table

7.2-1

Shanxi Provincial EPB requires Jincheng Municipal EPB to

provide EMD

9 Utilise 0.0 0.0 0.0 0.0

10 Exhaust heat boiler stack( including

foundation) 0.3 0.0 0.0 0.0

11 NOX emission concentration-- 180mg/Nm3 (15% O 2 content)

12 Cooling water intake, and effluent of cooling towers and circulating water

4.36 Sihe Plant

13

Waste water treatment system (oil containated)water living sewege, acidic,alkaline water,boiler acid

washing wasterwater

0.28 0.0 0.01

5 Sihe Plant

14 Silencer 3.41 0.0 Sihe Plant

15

Other noise control measures(vibration insulation and mitigation for gas engine, steam turbine, generator, coal-bed gas

compressor, feeding water pump of exhaust heat boiler, circulating water pump etc. and exhaust muffler and

noise insulation duty room)

1.67 0.0 Sihe Plant


91

16 Landscape planting sche to mitigate

against noise 0.23 Sihe Plant

17 Fire alarm system 0.248 Sihe Plant

18 Fire fighting pump 0.06 Sihe Plant

19 Gas leakage alarm 0.5 Sihe Plant

Table 7.2-1 Proposed Environmental Monitoring For the Project

Mitigation No.

Parameters Frequency Comments Capital 106

yuan

Running cost

106 yuan/y 1 Environmental

Management Annual Management

review 0 0

2 Stack height 1 QA of construction

0 0

3 Coal-bed gas Annual Lab 0 0.15 4 NOX Continuously On-line monitoring 0.5 0.1


92

5 NOX Annual Acceptance when being put into operation

0.01

6 Ambient NOX 3 times separately in summer and

winter in continuous 2 years

Jincheng Municipal Monitoring Station

7 QA of construction 0 0 8 Waste water \ 10 days -monthly See Table 7.2-2 0.1 9 Noise levels Annual 0 0.02

10 Planting Annual Management review

0 0

11 Rail transport Continuous Records of deliveries

0 0

12 Bunding 1 QA of construction 0 0 13 Emergency

equipment Annual Management

review 0 0

14 Pipeline routing

1 Design issue 0 0

15 Wheel was h etc.

Daily during construction

Environmental Management

0 0

16 Construction noise

Monthly 0 0.01

TOTAL 0.51 0.15


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Table 7.2-2 Wastewater Monitoring

Monitoring item Plant area drainage pH Once Suspended Solids Once COD Once Oil Twice at least per month Volatile mater BOD5

Table 7.2-3 Discharge monitoring points

Series NO. Drainage kind Sampling points

1 Plant area drainage drainage of the Plantgoes into STS

2 Domestic sewage Discharge point into STS

Table 7.2-4 Principal instruments& equipment for environmental monitoring

Name of equipment Usage Quantity

1.Spectrophotometer Analyzing composition in gas, liquid(ultraviolet, routine) 2

2.Atom absorption spectrophotometer Analyzing heavy metal composition 1

3.Sound level meter Measuring noise 2

4.Ten thousandth balance Weighing 2

5.Micro-computer Data processing ,statistics 1

6.PH meter Measuring PH 1

7.conductivity meter Measuring conductivity in waste water 1

8.COD analyser Measuring COD contents 1

9.Oil analyser Measuring oil contents 1

10.flow -meter Measuing drainage flow capacity 1

11.NOX monitoring device Monitor NOX concentration emitted by stacks


94

8 Public participation and publicizing

8.1 Public participation

EIA Center of MSRIC visited residents around the Project in EIA work and handed out public participation questionnaires. Refer to the detailed in Annex B. 8.1.1 The majority of the interviewees think that construction of Sihe Plant will be helpful to promoting local economic development. 8.1.2 The interviewees hope that Sihe Plant will make good options of noise equipment and noise mitigating measures to minimize noise impact on the surroundings. 8.1.3 Some part of interviewees hope that construction of Sihe Plant would not produce impact on water environme nt around. 8.1.4 The detailed public consultation is described in Annex B. 8. 2 Publicizing 8.2.1 JAMC has advised the public by Taihang Daily (newspaper) that EIA report of Sihe Plant has been finished, stored in the JAMC Office and hope the public can read the report and make suggestions.

eia report jincheng - world...

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